AN310/NASM310 and AN320/NASM320 Series castlellated nuts are manufactured from steel and cadmium plated. AN310/320 nuts have been superseded by NASM310/320 Series.  The Part Identification Numbers (PIN) for AN310/AN320 and those for NASM310/NASM320 are identical.

Castellated nuts are of similar style and shape as castle nuts but they are not as thick (deep) as the castle nuts (they consist the thin version of standard castle nuts). The thin design makes castlellated nuts weaker than the castle nuts and are used only where shear stress forces are encountered. Fabricated from steel and cadmium plated per QQ-P-416A, Type II, Class 3. AN310/NASM310 castle nuts are used with drilled-shank bolts, clevis bolts, eye bolts and studs. The slots in the nut accommodate a cotter pin for safety purposes. The thinner AN320/NASM320 series castellated shear nuts, with half the tensile rating of the AN310/NASM310 series nuts, are used with clevis bolts and threaded taper pins which are subject to shearing stress only.

Both AN310/NASM310 and AN320/NASM320 Series castlellated nuts are sourced from quality producers and offered as part of AVIATIONEU NEW ERA product lines. For additional information please consult the supplied documentation or contact us.

The NAS1291 series lock-nuts are widely used throughout the aerospace industry. They are thin-walled, self-locking nuts with a reduced height and are made of corrosion resisting (stainless) steel or cadmium plated alloy steel with or without dry film lubricant for 450 deg. F use. The nuts from corrosion resisting steel are designated by the letter "C" after NAS1291. The NAS1291 series of nuts ranges in size from 02 to 10, with corresponding thread diameters of .086 to .6250 inches. Some versions of the NAS1291 lock-nut have been superseded by NASM21042/MS21042 and NASM21043/MS21043 series. The NAS1291 series lock-nuts are offered in different sizes as part of our own branded (AVIATIONEU NEW ERA) product lines. For more information please refer to the attached documentation.

The MS21043 series all-metal hexagon self-locking reduced height nuts have a ring base and they are of corrosion resistance steel and silver plated. They are widely used throughout the aerospace industry together with the MS21042 series counterparts rated at 160,000 psi tensile strength and made of cadmium plated steel. Both are designed for use in high temperature installations (up to 450°F for MS21042 series  and up to 800°F for MS21043 series nuts). They both come without or with or  a dark grey dry film lubricant (Lubed) indicated by the letter "L" in their part number. MS21043 series nuts have been superseded by NASM21043 series while MS21042  ones have been superseded by NASM21042 series nuts. NASM21042/MS21042 and NASM21043/MS21043 series are used to replace certain versions of older NAS1291 series thin-walled reduced height self-locking nuts, made of corrosion resisting (stainless) steel or cadmium plated alloy steel (see the respective product presentation).

The NASM21042/MS21042 and NASM21043/MS21043 series nuts are offered as part of AVIATIONEU NEW ERA product lines. 

These nuts are for use in Textron Lycoming aircraft engines. Supplied with our own Certificate of Conformance. If additional certification is required, please contact us as a respective charge may apply.

Anchor nuts (aka nutplates or anchor plates) are terms used interchangeably and relate to stamped sheet metal fasteners with an internally threaded tube and a plate with two clearance holes for rivets. Initially designed and still extensively used in aerospace applications, they are today also used in automotive, motorsports, and other industries in blind mounted panel applications where hex nuts cannot be used or an attached nut is required for ease of maintenance. They can be Fixed or Floating, the latter being easier to install due to their built-in nut (threaded hole) able to "float" slightly thus providing a convenient connection point for threaded rods, such as bolts, from the backside. In the case of Fixed anchor nuts, the built-in nut is static (i.e. without the capability to “float”) and the threaded bolt must be positioned perfectly over the hole. Self-locking anchor nuts are those with a built-in locking mechanism preventing them from loosening over time from vibrations.

Anchor nuts are offered in Imperial (in.) and Metric thread sizes, in different materials (e.g. Carbon Steel, Steel alloys, CRES), finishes such as Cadmium or Cadmium Free Zinc Nickel platings (compliant to EU Regulations) with or without dry film lubrication. They come in various styles/configurations (e.g. with one or two lugs, full size or miniatures, countersunk, corner, right-angled bodies, etc.). They conform to different U.S., European and international standards such as the US Military MS and NASM, German DIN LN, French AFNOR NF, British BS, ISO and others.

Depending on the selected nutplate, aerospace anchor nuts are produced by different manufacurers, such as HOWMET AEROSPACE (formerly ARCONIC) or PAOLO ASTORI, and others, and offered as respective OEM parts or as parts of our own labelled (AVIATIONEU NEW ERA) product lines in the case of those used in industrial applications. Sold in pieces or packs of specified number of anchor nuts per pack indicated after the letters "PK" in the product SKU. 

Anchor nuts manufactured i.a.w DIN LN 29681 standard are Metric self-locking floating one-lug anchor nuts. Depending on the manufactuer, they are made from Steel Alloys (25CrMo4,DIN 1.7214.4/1.7220.3, 25CD4, SAE 4135/ 4140, AISI 4135/4137) with Cadmium plating & MoS2 low friction coating. Suitable for use in temperatures up to 235°C. Their counterparts of DIN LN29668 Standard are made from Incoloy Alloy® A-286 (aka A286 Alloy Stainless Steel, an austenitic superalloy) and can be used for temperatures  up to 425 °C. Both feature a tensile strength of 900 MPa. Offered in different Metric thread sizes from HOWMET AEROSPACE (separately listed), PAOLO ASTORI and others as OEM parts. Depending on the part number they are sold mostly in pieces but also in packs where the number of anchor nuts per pack is indicated after the letters "PK" in the product SKU.

For additional information please refer to the supplied documentation or contact us.

Screws, bolts and nuts are standard fastening hardware widely used in a range of applications. 

Internal wrenching (also known as Allen) fasteners are threaded fasteners. Screws and bolts have a drive recess within the head allowing the insertion of an internal wrench for their installation or removal. Allen socket set screws are blind (headless) fasteners with an internal hex drive offered in different styles (regular cap screw and flat and button type) while Allen nuts are cylindrical nuts internally threaded on one side with an Allen socket on the other. These fasteners are produced by different manufacturers and come in different styles, inch or Metric sizes, materials, finishes,  and coarse or fine threadings. They are offered as OEM parts or parts of AVIATIONEU NEW ERA product lines. Sold in pieces or packs of specified number of pieces per pack as designated by the number after the letters "PK" in the product reference code (SKU). 

Internal wrenching fasteners for aerospace applications are designed and intended for use in aircraft construction and repair and conform to Military or Aerospace Standards. Aerospace Industries Association Standard NASM 20004 through 20024 internal wrenching bolts supersede respective part numbers of MS 20004 through 20024 which in turn have superseeded those of older National Aerospace Standard NAS NAS 144 to 158 series. Fabricated from 160-180 ksi high-strength steel they are intended for use in both tension and shear applications. 

Socket screws for aerospace and military uses come in different sizes and meet aerospace/military standards including AN565 (superseded by NASM565), NAS1081, MS18063, MS18064, MS51021, MS51023, MS51029, MS51031, MS51038, MS51045, MS51963, MS51964, MS51965, MS51966. Those of AN565 (NASM565) standard are headless hex and fluted socket set screws while their MS51963 standard counterparts are cup point hex socket set screws.  Both are made of high-quality steel and they are designed to deliver maximum holding pressure Typically used to bind parts onto shafts. Available in cup or cone point styles, in different thread sizes and lengths in inches.

81791 internal wrenching  nuts are self-locking, high-strength, corrosion and oxidation resistant nuts made of nickel-chromium alloy with cadmium plating. These nuts are catalogued and supplied in different sizes as part numbers of TEXTRON AVIATION (separately listed).

For more information, please refer to the Product Description section, the supplied documentation or contact us.

Anchor nuts (aka nutplates or anchor plates) are terms used interchangeably and relate to stamped sheet metal fasteners with an internally threaded tube and a plate with two clearance holes for rivets. They are used in blind mounted panel applications in aerospace and other industrial sectors where hex nuts cannot be used or an attached nut is required for ease of maintenance. 

Anchor nuts can be Fixed or Floating, the latter being easier to use due to their built-in nut (threaded hole) able to "float" slightly thus providing a convenient connection point for threaded rods, such as bolts, from the backside. In the case of Fixed anchor nuts, the built-in nut is static (i.e. without the capability to “float”) and the threaded rod must be positioned perfectly over the hole. Self-locking anchor nuts are those with a built-in locking mechanism preventing them from loosening over time from vibrations. They are extensively used in aerospace, automotive, and construction industries.

Depending on their intended application, nutplates conform to different military, aerospace, ISO or other industrial standards such as the German DIN, U.S. (ASME & ASTM, IFI, ANSI), British BS, Japanese JIS and others. They are offered as OEM parts under their respective brands or under our own labelled (AVIATIONEU NEW ERA) product lines intended as cost-effective alternatives to the respective OEM products. Listed in accordance with their standard of compliance, Fixed and Floating nutplates come in different materials (such as steel or CRES & finishes),  in single/double lug configurations and Metric ISO οr Unified thread sizes. There is currently no U.S. Military Standard (MS) specification for Metric nutplates.Depending on the selected product and availability, nutplates can be supplied with a dry film lube specified by the letter "L" in the respective part number. Those with countersunk rivet holes are specified by the letter "K" at the end of the part number.

Sourced from quality manufacturers, AVIATIONEU NEW ERA floating self-locking, low height two-lug nutplates conform to NASM 21059/21060 Standards superseding the respective MS21059/MS21060 without change in part numbers. They can be riveted to the back of a stationary panel using pop rivets or solid matching rivets (sold separately) allowing for some misalignment in assembly. NASM 21059 nutplates are made of cadmium plated carbon steel & those of NASM 21060 from corrosion resistant steel (CRES).They feature 125 KSI ultimate tensile strength (Ftu) and can withstand temperatures of 450°F (NASM 21059/21060) or 800°F (NASM 21060 when silver plated). Offered in different dimensions & Unified thread sizes, with plain or countersunk rivet holes & with dry film lubrication for corrosion resistance or without. Supplied in pieces or packs with the number of nuts per pack indicated after the letters "PK" in the product SKU. Appearing prices are in the unit of measurement used each time.

Brass nut for mounting of aircraft instruments from the front of the panel.

A nylon-insert lock nut (also referred to as elastic stop nut, nut with a non-metallic insert  or nyloc nut) is a type of locknut with a nylon collar that increases friction on the screw thread. Nyloc nuts are widely used in products and structures subject to dynamic loads where motion or vibration can cause fasteners to become loose. Their design prevents the connection from loosening without the need for additional lock washers.The nylon insert is situated at the top of the nut and when tightened locks against the thread. The insert deforms elastically over the threads as tightening pressure is applied. The insert locks the nut against the screw as a result of friction, caused by the radial compressive force resulting from the deformation of the nylon. Nyloc nuts retain their locking ability up to 250 °F.

Metric hexagonal nylon-insert self-locking nuts are high anti vibration and anti loose fastening parts conforming to DIN 982 and DIN 985 standards. Different metric thread sizes are designated by the letter "M" indicating the nut's clearance diameter in mm. The main difference between DIN 982 & DIN 985 is the height of the nuts for same thread diameter. DIN 982 lock nuts (often termed as “P” Type) are taller than DIN 985 (aka “T” Type) ones. Lower profile  DIN 985 are used in places where height is limited, while standard height DIN 982 nuts are used in connections where increased strength and fixation are required. In addition, the size range of DIN 985 nuts is wider than that of DIN 982. DIN 985 Nylon self-locking nuts can be used in various mechanical and electrical products with temperature from – 50 ℃ to 100 ℃. Due to their significantly higher anti vibration and anti loose performance than other anti loose devices, their application ranges from  tanks, mining, agricultural, textile &  various kinds of machinery to automobiles and aerospace.

Both DIN 982 and DIN 985 lock nuts are offered as part of our own (AVIATIONEU NEW ERA) product lines. Sourced from quality manufacturers they are competitively priced and can be supplied in different materials (Steel, Brass, Carbon Steel, Alloy Steel & Stainless Steel), grades (Class 5, 6, 8 or 10), metric thread diameters (typically M3/3 mm to M30/30 mm or up to 48 mm for DIN 985 nuts), thread pitches and finishes (natural, electro zinc-plated, chrome plated, black oxide and others). Sold in pieces or packs with number of pieces per pack indicated after "PK" designation in product SKU.

Notes:

Nut thread pitch indicates the distance between threads measured along the length of the nut expressed in mm.

In the case of stainless steel lock nuts, the stainless steel grades are denoted with codes such as A2 or A4 and dash numbers indicating the minimum tensile strength to be met by the material. For example, A2-70 relates to a nylon-insert lock nut made from 304 stainless steel with a minimum tensile strength of 700N/mm² (MPa).

A castellated nut, also referred to as a castle nut or slotted nut, is a nut with slots (notches) cut into one end. Although castellated nuts are frequently referred to as slotted nuts, there are slight differences. Castellated nuts are formed with a round section at the top where the slots are located. Slotted nuts do not have this rounded modification. The flat sides of slotted nuts extend fully from the top to the bottom of the nut. Both castellated and slotted nuts are designed to use a pin (usually a split pin) that fits through the slots and through a hole in the screw to which the nut is attached. This pin prevents the nut from turning and loosening. Compared with slotted nuts, castellated nuts allow the cotter pin to be confined closer to the margins of the nut itself, providing added secureness.

MS14144 Series nuts are slotted hexagon style lightweight castellated self locking nuts manufactured from steel and cadmium plated. They are offered as part of our own labelled (AVIATIONEU NEW ERA) product lines in different sizes with right-hand thread direction and a dry film lubricant as applicable, specified by the letter "L" in the part number.

Note: Depending on availability,these parts part may be supplied without or with Dry-Film Lubricant indicated by letter "L" in the SKU.

DIN LN 9338 / LN 9161 Standard nuts are hexagon flanged self Locking  nuts offered in Metric thread sizes. Also known as K-Nuts, these 6 point self locking nuts with integral washer are commonly used in aerospace and motorsport applications. Both are lightweight, with a reduced height for use in confined areas, a high mechanical resistance, corrosion resistance and a wide operating temperature range. DIN LN 9338 nuts are made of alloy steel (typically  35CrMo4 steel) and cadmium plated.  They can be used for temperatures up to 235 °C. Their counterparts of the LN 9161 Standard are offered in Regular and High Temperature versions. The high temperature LN 9161 nuts differ from regular ones in terms of material, finish and temperature class. Regular LN 9161 nuts typically made of 35CrMo4 aerospace steel with cadmium plating are intended for use for temperatures up to 315 °C while high temperature LN 9161 nuts from Stainless A286 CRES with silver plating can cover temperature requirements of up to 425 °C.

Depending on the Standard, DIN LN 9338 / LN 9161 nuts are offered in different thread sizes from various manufacturers including HOWMET AEROSPACE (separately listed), PAOLO ASTORI, ECROU AVIATION and others. 

For additional information please refer to the supplied documentation or contact us. 

Anchor nuts (aka nutplates or anchor plates) are terms used interchangeably and relate to stamped sheet metal fasteners with an internally threaded tube and a plate with two clearance holes for rivets. They are used in blind mounted panel applications in aerospace and other industrial sectors where hex nuts cannot be used or an attached nut is required for ease of maintenance. 

Anchor nuts can be Fixed or Floating, the latter being easier to use due to their built-in nut (threaded hole) able to "float" slightly thus providing a convenient connection point for threaded rods, such as bolts, from the backside. In the case of Fixed anchor nuts, the built-in nut is static (i.e. without the capability to “float”) and the threaded rod must be positioned perfectly over the hole. Self-locking anchor nuts are those with a built-in locking mechanism preventing them from loosening over time from vibrations. They are extensively used in aerospace, automotive, and construction industries.

Depending on their intended application, nutplates conform to different military, aerospace, ISO or other industrial standards such as the German DIN, U.S. (ASME & ASTM, IFI, ANSI), British BS, Japanese JIS and others. They are offered as OEM parts under their respective brands or under our own labelled (AVIATIONEU NEW ERA) product lines intended as cost-effective alternatives to the respective OEM products. Listed in accordance with their standard of compliance, Fixed and Floating nutplates come in different materials (such as steel or CRES & finishes),  in single/double lug configurations and Metric ISO οr Unified thread sizes. There is currently no U.S. Military Standard (MS) specification for Metric nutplates.Depending on the selected product and availability, nutplates can be supplied with a dry film lube specified by the letter "L" in the respective part number. Those with countersunk rivet holes are specified by the letter "K" at the end of the part number.

Sourced from quality manufacturers, AVIATIONEU NEW ERA MS21047 series nutplates are fixed self locking elastic insert 2-lug anchor nuts made of cadmium plated steel with nylon insert and plain rivet holes. They replace those of AN366F series and are available in different Unified thread sizes to meet application requirements and replace respective nut plates. Sold in pieces but also in packs where the specified number of nuts per pack is indicated after the letters "PK" in the product reference number (SKU). Appearing prices are always for the units of measurement used each time. Matching rivets are sold separately.

For additional information please refer to the supplied documentation or contact us.

National Aerospace Standards (NAS) are voluntary standards developed and maintained by committees and working groups of subject matter experts from member companies of the U.S. Aerospace Industries Association (AIA).

These standards have served as the foundation for the development of aircraft, spacecraft, watercraft, ground vehicles, machinery, and electronics.

NAS parts are most well-known for state-of-the-art, high-strength, precision fasteners, electrical connectors, splices and terminations, rod end bearings, and many other types of hardware and components. The NA prefix relates to metric standards. 

NA-0027/NA-0028 Series Metric Self-Locking Floating Two-Lug Nut Plates (*) form part of NAS high-strength, precision fasteners. Sourced from quality manufacturers they are offered as part of our own labelled (AVIATIONEU NEW ERA) product lines in different materials, finishes, thread sizes and dimensions in Metric system. Usually sold in pieces but packs are also used where the number of anchor nuts per pack is indicated after the letters "PK" in the product SKU. Appearing prices are always for the used units of measurement each time. For additional information, please refer to the product specifications or contact us.

(*) also termed as plate nuts, anchor nuts or anchor plates. These terms are used interchangeably to describe the respective fasteners. 

National Aerospace Standards (NAS) are voluntary standards developed and maintained by committees and working groups of subject matter experts from member companies of the U.S. Aerospace Industries Association (AIA). These standards have served as the foundation for the development of aircraft, spacecraft, watercraft, ground vehicles, machinery, and electronics.

NAS parts are most well-known for state-of-the-art, high-strength, precision fasteners, electrical connectors, splices and terminations, rod end bearings, and many other types of hardware and components. The NA prefix relates to metric standards. 

NAS1473 Series Floating Self-Locking Two-Lug Capped Nut Plates (*) and their NAS1474 Series counterparts with reduced rivet spacing allow for a stronger, more secure hold when installing bolts on thin or unstable surfaces. These nut plates are capped, with the end of the bolt being fully protected. Both are are manufactured from cadmium plated steel or corrosion resistant (stainless) steel (CRES) by different manufacturers. They are offered  in different materials, finishes, thread sizes and dimensions in inches either as OEM parts of their respective manufacturers or as parts of our own labelled (AVIATIONEU NEW ERA) product lines.  They come with or without lubrication. Sold in pieces or packs of specified number of nut plates appearing in the product reference number (SKU) after the letters "PK".

The following code letters in their part numbers indicate the different materials and finishes used in their manufacturing ("K" indicates need for stiffening flange).

A -Steel nut & shell (dome) with Aluminum Alloy or Steel washer  cad plated per AMS-QQ-P-416, type II, class 2. Fuel Resistant Seal MIL-PRF-6855 (225 deg. F),Dry film lubricant AS5272 over cad plate.

S - Steel nut, dome and washer cad plated per AMS-QQ-P-416, type II, class 2. Fuel Resistant Seal MIL-DTL-25988 (350 deg. F). Dry-film lubricant per AS5272 over cad plate.

X - Same as A without dry film lubricant.

Y - Same as S without dry film lubricant. 

C - A286 CRES nut, dome and washer passivated per AMS2700. Nut silver plated per AMS2410. Non-fuel resistant AMS3304 seal (450 deg. F).

F - A286 CRES nut, dome and washer passivated per AMS2700. Fuel resistant seal MIL-DTL-25988 (350 deg. F), dry-film lubricant per AS5272.  (350 deg. F).

R - A286 CRES nut, dome and washer passivated per AMS2700. Fuel resistant seal MIL-PRF-6855 (225 deg. F), dry-film lubricant per AS5272.

(*) also termed as plate nuts, anchor nuts or anchor plates. These terms are used interchangeably to describe the respective fasteners. 

 A. RAYMOND TINNERMAN® & PALNUT® (aka PAL) of TINNERMAN PALNUT ENGINEERED PRODUCTS, INC. are leading brands in specialty clip-type fasteners including the world's largest selection of spring steel, stainless steel, and plastic engineered fasteners. Their fasteners replace traditional fastening methods with innovative solutions combining aesthetics and functionality. They are quick and easy to install, and do not require mounting tools.

TINNERMAN® spring steel nuts (aka speed or sheet metal nuts) are self-retaining fasteners serving the functions of both a lock washer and a nut for an easy & fast attachment of mating panels. Offered in different shapes (e.g. Flat U, J) styles & finishes they can be used as both blind and front mounting attachments without required special tools, skills or equipment, removed and reused. Riveting, welding, clinching, staking and other secondary fastening devices are eliminated.

Flat type (NAS 446) TINNERMAN® nuts are used to replace threaded nuts, lock washers, and spanner washers weighting less than other types of self-locking aircraft fasteners. Designed to fit standard AN530-AN531 type B sheet metal screws only. Can be applied faster, easier, and are vibration resistant. Provide maximum holding power at minimum cost per fastener. Turned-up ends prevent scoring of surfaces.

J-type TINNERMAN® nuts press easily into self-retained position over panel edges or in center-panel locations. Ideally suited for blind assembly or hard-to-reach installations. Offer floating alignment to speed production and and lessen rejections. Can be applied after painting or porcelainizing panels eliminating the need for masking or retaping operations.

U-Type TINNERMAN® nuts (NAS396 Series), offered in U-Shaped and U-Nut Tapped Barrel styles, are made of spring steel with phosphate-coated with three coats of olive drab paint finish unless otherwise specified. Designed to fit standard AN530-AN531 type B sheet metal screws only. Available in different screw sizes & intended for use in many non-structural applications including appliances, panel assemblies, HVAC, automotive, electronics, aerospace, marine, utility vehicles & lighting equipment. Product Features: vibration proof, easy installation, no special tools, easily disassembled, reusable, used in place of clinch or weld nuts, correct misaligned mounting holes, no masking or retaping, retain holding power, corrosion proof, won’t freeze on threads.

Sourced from their respective manufacturers OEM parts of TINNERMAN® fasteners or their equivalents (separately listed) are offered in pieces but also in convenient packs as part of our own labelled (AVIATIONEU NEW ERA) product lines with a specified number of fasteners of the respective part number per pack indicated after the letters "PK" in our product reference number (SKU). Please refer to the Product Description Section for an indicative list of available packs.

J.LANFRANCO & CIE is a manufacturer of high performance fasteners including all-metal and nylon insert locknuts, clinch nuts and inserts, modular fixtures, bolts and washers.

J.LANFRANCO all-metal locknuts have no plastic inserts. They are suitable for applications under extreme temperatures, corrosive environments effective or those under high levels of vibration. J.Lanfranco all-metal locknuts come in different versions (types) outlined below:

ESL: Dual-slotted, all-metal, reusable slotted self-locking hexagon nuts. Extremely reliable with consistent prevailing torque, and no galling.

ERM: All-metal, reusable self-locking hexagon nuts with double slots & UNC/UNF or Metric moving washer. Time saver nuts with integrated disc spring washers for quick installations and absolute tension maintained under dynamic loads.

THU: Full-height, heavy hex industrial version of the ESL nuts. Feature a robust industrial design and superior resistance to vibration, corrosion, and temperature.

Single Slot Self-locking Hexagon nuts HCB, HCE & HCT. All supplied with ISO 965-2 standard threading. All offered in steel ISO 898-2/ISO 2320 & stainless steel ISO 3506-2/NF E 25-035-2 in different metric diameters, fine pitch, special height, non-standard hexagon on request.

HCB: Single-slotted, extra low height, locking jam nuts.

HCE: Single-slotted, normal self-locking hexagon nuts.

HCT: Reusable one-piece, full-height locknuts ideal for high temperature areas.

GSL: ISO 7042 locknuts offered in metric steel class 8, 10, 12 and stainless steel A2-70 & A4-80

HUS Starnut: Standard deformed thread locking nuts also known as a “top locking” type nuts.

SPR: Hex nuts with crimped, deflected metal ring.

SRF: Top locking style flange nuts in which locking is achieved by deformation of the last thread.

J.LANFRANCO nylon Insert locknuts are self-locking hex nuts with a standard or high temperature nylon ring to generate prevailing torque. Product portfolio includes a full line of metric nylon insert nuts as well as imperial NE, NU, NTU patterns in UNJC & UNJF thread form MIL-8879 or MIL-S-7742. Nylon Insert locknuts come in the following versions (types):

HMP ISO 10511: Low-height metric nylon insert locknuts to ISO 10511.

HUP ISO 7040: Nylon insert locknuts made to all major metric and imperial standards (ISO 7040, IFI 100/107). Available in carbon steel, stainless steel, and exotics. UNJC & UNJF threads are also available.

EUM: Nylon insert self-locking nuts with a free spinning conical washer.

J.LANFRANCO & CIE fasteners are widely used in different industries for automotive/bodywork, vehicle substructures, transportation plant construction, rail vehicles/bogies, energy supply/power plant construction, shipping but also for aerospace and defence applications.

For additional information please consult the Product Description section & the supplied documentation.

AN315/NASM315 Series hex plain nuts are manufactured from steel and cadmium plated per QQ-P-416A, Type II, Class 3, corrosion resistance steel or aluminum alloys. The AN315 nuts have been superseded by NASM315 Series. Similar to common nuts  but with a rugged construction they are designed and built with aviation grade materials and to specific aviation design specifications. They can carry the same high tension load as the AN310 castle nuts and require an auxiliary locking device such as a check nut or lock washer. 

Sourced from quality producers, the AN315/NASM315 Series hex plain nuts are offered as part of AVIATIONEU NEW ERA product lines in different thicknesses and thread sizes in inches. The following letters are used to designate specific types of airframe nuts:

"C" before dash number for corrosion resistance steel nuts

"D" before dash number for aluminum-alloy nuts

"L" after dash number for left-hand thread

"R" after dash number for right-hand thread

For additional information please consult the supplied documentation or contact us.

Certification Details:

AN315 (REV. 10) (NOTICE 2)., AIR FORCE-NAVY AERONAUTICAL STANDARD: Nut, Plain, Castellated, Airframe (23 SEP 2002) [S/S BY NASM315]., AN315 REV. 10, dated 29 DECEMBER 1972, is hereby canceled and superseded by NASM315. The Part Identification Number (PIN) for AN315 REV. 10 and the part number for NASM315 are identical. The part numbers have not been changed.

Boeing & Airbus, the two leading airframe builders, have developed specifications for fasteners, hardware and other parts manufactured by different companies. Compliance with  Boeing (aka BAC) and Airbus (aka ASNA) Standards is a  prerequisite for installation or use of these parts on their respective aircraft. In many cases, Boeing & Airbus fasteners and other parts have the same fit, form, and function and they are considered as alternatives or substitutes to the respective parts designed and/or manufactured by industry leaders such as HI-SHEAR  or HOWMET in the case of fastening products.They also conform to widely accepted Military & Aerospace Standards such as AN, MS, NAS and others. However, caution is required as, depending on their series & conforming standard, fasteners are offered in Imperial (in.), Metric (mm) systems, or  both, with resulting variations in their dimensions and units of measurement of their properties.

As a result of the extensive portfolio of fastening products (including screws and bolts, nuts, washers, pins, rivets, clamps, and many others) from different leading suppliers, and those falling under Boeing, Airbus, Military and Aerospace Standards, these are listed separately in our Web Platform for Supplies.  It must be noted that, depending on the intended application, usually more than one options are available to prospective buyers and selection is finally made, apart from specifications, on the basis of price or lead time required for non-stock parts. Whenever possible,correlation tables and other information and documentation is provided to facilitate the users' awareness on interchangeability of offered fasteners and the selection of the right parts for their intended application. For additional information please contact us.

NAFCO USA is a manufacturer of self-locking nuts as well as different types of nutplates and press-in inserts and dome nuts. Their fasteners conform with National Aerospace Standards (NAS) developed and maintained by the U.S. Aerospace Industries Association (AIA) and served as the foundation for the development of aircraft, spacecraft, watercraft, ground vehicles, machinery, and electronics. The NA prefix in the part numbers of the fasteners relates to metric standards.

In the world of aerospace fasteners NAFCO USA has built a reputation for quality, affordable, and innovative products. NAFCO USA’s stressnut rivetless nutplates, are no exception. Their stressnut rivetless nutplates meet and exceed the requirements of aerospace standard NASM25027 and offer high resistance to push-out and torque. In addition, the rivetless design eliminates the need for additional drilled holes and rivet installation, allowing faster installation times. Time savings on installation translates into reduced labor costs. Other Features Include:

Increase substrate fatigue life up to 300%.

Installed with convenient split sleeve tooling.

Replaceable nut elements (NAS1794 standard).

Inch or metric unit versions.

Sealed or unsealed versions.

Do not require gang channels.

Reduced profile/weight versions available.