Machine screws are one of the more widely used products among dozens of standard fastener types. They can be either coarse-threaded or fine-threaded, and are usually available with a wide range of head types. Usually stronger than many other screw types, they are used for fastening metal parts and panels securely together in a range of construction and other applications including aerospace, machinery, vehicles, engines, tool assemblies, electronic devices, and large-scale industrial equipment. 

Sourced from quality producers,  machine screws are offered as part of our own branded (AVIATIONEU NEW ERA) product lines conforming to aerospace/military or industrial standards/specifications.  They come in different sizes, head types, materials and thread gradings. Countersunk screws allow the head of the screw to sit flush with or below the surface of the surrounding material. They may also be used to remove the burr left from a drilling or tapping operation thereby improving the finish of the product and removing any hazardous sharp edges.

AVIATIONEU NEW ERA AN503 series of machine (non structural) screws are aeronautical standard coarse thread slotted fillister drilled head screws meeting MIL-S-6050 specifications. They are manufactured from steel and cadmium plated to specification Type I Class 3. These screws feature 125,000 psi tensile strength, they are offered in different sizes in inches and they are sold in pieces. For more information, please refer to the supplied documentation or contact us.

Machine screws are one of the more widely used products among dozens of standard fastener types. They can be either coarse-threaded or fine-threaded, and are usually available with a wide range of head types. Usually stronger than many other screw types, they are used for fastening metal parts and panels securely together in a range of construction and other applications including aerospace, machinery, vehicles, engines, tool assemblies, electronic devices, and large-scale industrial equipment. 

Sourced from quality producers,  machine screws are offered as part of our own branded (AVIATIONEU NEW ERA) product lines conforming to aerospace/military or industrial standards/specifications.  They come in different sizes, head types, materials and thread gradings. Countersunk screws allow the head of the screw to sit flush with or below the surface of the surrounding material. They may also be used to remove the burr left from a drilling or tapping operation thereby improving the finish of the product and removing any hazardous sharp edges.

AVIATIONEU NEW ERA MS35206 and MS35207 series of machine (non structural) screws are mil spec pan head cross recessed (Phillips) screws, manufactured from carbon steel and are cadmium plated to specification QQ-P-416, Type 2, Class 3. MS35206 series machine screws feature 60,000 psi min. tensile strength and can be used as replacements for AN526 truss head & AN515 round head screws. MS35207 series machine screws are fine threaded have a minimum tensile strength of 55,000 psi and replace the AN507R series. Both MS35206 and MS35207 series machine screws are offered in different diameters, thread sizes and lengths in inches and they are sold in pieces. For more information, please refer to the individual product presentations, the supplied documentation or contact us.

National Aerospace Standard (NAS) machine bolts are commonly used in aircraft, space shuttles, military vehicles, drones, and other high-performance applications. They are offered in different series to meet application requirements.

Those of NAS 6203 through NAS 6220 series, superseding their NAS 11(xx) counterparts, are tension hexagon head high strength close tolerance short-thread alloy steel bolts with a minimum tensile strength of 160,000 psi and a minimum shear strength of 95,000 psi. 

They are made from different steel alloys such as 4140 (UNS G41400) or  4340 (UNS G43406) with either Cadmium Plate  Type II, Class 2 or Chromium Plate on shank only with all other surfaces cadmium plated.

Depending on the series they come in different nominal diameters in inches (e.g. NAS 6203 0.1875" (3/16"), NAS 6204 0.25" (1/4"), NAS 6205  0.3125" (5/16"), NAS 6206 0.375" (3/8"), NAS 6208 0.500" 1/2") or NAS 6210 0.625" (5/8") grips (in 1/16” increments beginning at 1/16”), thread and overall fastener lengths. They can be supplied undrilled or with drilled head and/or thread and with or without locking elements (nylon or equivalent). Sourced from quality manufacturers, these bolts are listed according to their series, and offered either as OEM parts or as parts of our own labelled (AVIATIONEU NEW ERA) product lines (see the respective listings). Sold in pieces or packs of specified number of bolts per pack designated by the number after the letters "PK" in the product reference code (SKU).

The following letters after the basic part numbers specify the material, finish, drilling condition, and self-locking capability of these bolts.

No Finish Code for Cadmium II plated bolts

"C" for Chromium plated bolts (shank only)

"L" for Self-locking bolts

"P" for Self-locking bolts with patch type locking element only

Grip Dash Number indicating grip in .0625 increments

"D" after the grip dash number for drilled thread bolts

"H" after the grip dash number for bolts with drilled head

More than one code letters may be used in sequence.

PN Examples:

NAS6204-10 - NAS 6204 Series Bolt, .2500-28 Thread, .625 Grip, Undrilled, Non-locking, Alloy Steel Cadmium II Plated.

NAS6204-10D - Same bolt as above with Drilled Thread.

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

Machine screws are one of the more widely used products among dozens of standard fastener types. They can be either coarse-threaded or fine-threaded, and are usually available with a wide range of head types. Usually stronger than many other screw types, they are used for fastening metal parts and panels securely together in a range of construction and other applications including aerospace, machinery, vehicles, engines, tool assemblies, electronic devices, and large-scale industrial equipment. 

Sourced from quality producers,  machine screws are offered as part of our own labelled (AVIATIONEU NEW ERA) product lines conforming to aerospace/military or industrial standards/specifications. They come in different sizes, head types, materials and thread gradings. 

Machine sccrews meeting National Aerospace Standards (NAS), developed and maintained by the US Aerospace Industries Association (AIA), come in different types and sizes structured in different series, including:

NAS 1101, 1102, 1189, 1190, 1191, 1635, 1801, 1802, 220, 229, 333,  514,  517, 560, 583, 600, 623 και NAS 662.

The NAS 583 series are non structural machine screws are flush head close tolerance machine screws made of aeronautical 100 deg. alloy steel and cadmium plated.  Offered in different thread sizes and lengths in inches as OEM parts of respective manufacturers or as parts of AVIATIONEU NEW ERA product lines. Sold mostly in packs with number of pieces per pack specified after the letters "PK" in the product reference number (SKU). For more information, please refer to the supplied documentation or contact us. 

AN hex head bolts in different series are offered under AVIATIONEU NEW ERA product series. Sourced from quality vendors, these bolts are manufactured to the US Army-Navy (AN) standard, predecessor to Mil-Spec (MS), superseded by the National Aerospace Standard (NAS). Commonly used in aviation for either tensile/shear load applications. Made from high-strength type 4037 or 8740 alloy steel or 431 Stainless Steel (CRES) and cadmium plated for superior corrosion resistance (compared to commercial grade zinc plated bolts) they are offered with shank drilled for cotter pin or undrilled for stop nut application, and with a drilled head for safety wire or without. Minimum Tensile Strength (Steel and CRES) - 125,000psi. The length of AN aircraft bolts is measured from under the head to the end of the shank. The "grip" is the unthreaded portion of the shank. Threads are pressed into the steel, not cut, thus maintaining strength throughout the entire shank. The surface under the head of AN bolts is designed to be a bearing surface to reduce non-uniform stress as the bolt is torqued thus reducing premature fatigue. The following letters are used in the product part  numbers.

"A" after the dash number for bolts with undrilled shank

"C"  for bolts made of 431 Stainless Steel (CRES)

"H" after the AN number for bolts with drilled head (eg. AN5H-15)

 AN3 through AN20 Series bolts are superseded by NASM3 through 20 Series. The part numbers in both series have not been changed. 

Specification Details:

AN3 through AN20 (REV. 12), Military Specification Sheet: Bolt -Machine, Aircraft [superseded by NASM3 through 20]. This specification covers aircraft machine bolts part numbers, AN3, AN4, AN5, AN6, AN7, AN8, AN9, AN10, AN14, AN16, AN17, AN18, and AN20. AN3 THRU AN20  is canceled and superseded by NASM3 THRU NASM20. The Part Identification Number (PIN) for AN3 THRU AN20 REV. 12 and the part number for NASM3 THRU NASM20 are identical. The part numbers have not been changed.

AVIATIONEU NEW ERA ASTM A324 Grade 10.9 Series high tensile hexagonal head threaded bolts are produced from medium carbon steel, medium carbon steel alloy and low carbon boron steel with heat treatment by both quenching and tempering.  They meet ASTM A324 Grade BD and SAE J429 standards. These bolds feature high tensile strength and good wear resistance and are used in automotive applications and for bolting large and forged parts. 

Nominal Tensile Strength: 1.000 Megapascal (MPa) or 1.000 N/sqr. mm , Yield Stress: 900 Megapascal (MPa) or 900 N/sqr. mm 

They are offered in different finishes (zinc plated, plain or hot dip galvanised) and different standard, coarse and fine thread sizes (diameter M20 to M100 mm / 3/4" to 3.1/2").  Sold by the piece (pc.) in increments of 10 pieces with Minimum Order Quantity (MOQ) 100 pieces. Appearing price is for reference only and differentiates based on wanted bolt sizes. Please contact us for a quotation.

AN Clevis bolts are manufactured from nickel steel alloy, SAE 2330 and cadmium plated in same manner as AN3 - AN8 aircraft bolts.They are special-purpose bolts with a a slotted brazier type head and used where a large shearing stress occurs (never in tension). Minimum tensile strength 125,000 PSI. They are available with drilled or undrilled shank (designated by the letter "A" after the dash number for undrilled shank). For the AN12-AN23 bolts the second digit denotes the fine thread machine screw size (e.g. for AN21 the size is 6-40, for AN22 8-36 and for AN23 10-32). For the AN24-AN36 bolts the second digit denotes the diameter in 1/16 inch increments (AN25 has a diameter of 5/16 inch).

National Aerospace Standard (NAS) bolts come in a large variance of lengths, thread types, head type, and materials. NAS bolts are suitable for high strength applications. They are the same as Army-Navy (AN) bolts, except they may be either raised or recessed.

NAS bolts are offered as part of our own labelled (AVIATIONEU NEW ERA) lines of fasteners. They are sourced from quality manufacturers and structured in different series. 

AVIATIONEU NEW ERA NAS 428 series of machine (non structural) bolts are fully threaded, crowned hexagon head bolts made from cadmium plated steel or corrosion resistant steel (CRES). These bolts are offered with drilled or undrilled head or thread in different thread sizes, diameters and lengths in inches and sold in pieces. The number after NAS428 ( - ) denotes the thread size in 1/16th inch increments. The number after the last dash ( - ) is the overall length under the head. If this number is a single digit it is 1/8 of an inch. If it is a two digit number, the first is whole inches, the second is additional 1/8ths. For more information, please refer to the supplied documentation or contact us. 

Structural screws are made of alloy steel, are properly heat treated, and can be used as structural bolts. Those commonly used in aircraft applications are manufactured to aerospace/military standards/specifications. They are offered as part of our own branded (AVIATIONEU NEW ERA) product lines in different materials and finishes, structured in different series based on the standard of their conformance.

AVIATIONEU NEW ERA MS27039 Series structural machine screws are pan head cross recessed screws equivalent to those of NAS 220 Series. MS27039 Series screws are fabricated from Alloy Steel and Cadmium plated per specification QQ-P-416A, Type II, Class 3, Anodized Aluminum Alloy 2024 or Stainless Steel Unplated  to MIL-S-6050 or MIL-8695 specifications. Those from are designated by the letters "DD" and their counterparts from stainless steel  by the letter "C" respectively in the product part number after MS27039 and before the size number. These screws have 125,000 to 145,000 psi tensile strength. Sourced from quality suppliers, they are offered in different thread sizes and lengths in inches and sold in pieces or convenient packs of specified number of screws per pack indicated after the letters "PK" in the product reference number (SKU).

Other structural screws of NAS204 through NAS235 and AN509/AN525 series are also available (see individual product presentations).

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

AN hex head bolts in different series are offered under AVIATIONEU NEW ERA product series. Sourced from quality vendors, these bolts are manufactured to the US Army-Navy (AN) standard, predecessor to Mil-Spec (MS), superseded by the National Aerospace Standard (NAS). Commonly used in aviation for either tensile/shear load applications. Made from high-strength type 4037 or 8740 alloy steel or 431 Stainless Steel (CRES) and cadmium plated for superior corrosion resistance (compared to commercial grade zinc plated bolts) they are offered with shank drilled for cotter pin or undrilled for stop nut application, and with a drilled head for safety wire or without. Minimum Tensile Strength (Steel and CRES) - 125,000psi. The length of AN aircraft bolts is measured from under the head to the end of the shank. The "grip" is the unthreaded portion of the shank. Threads are pressed into the steel, not cut, thus maintaining strength throughout the entire shank. The surface under the head of AN bolts is designed to be a bearing surface to reduce non-uniform stress as the bolt is torqued thus reducing premature fatigue. The following letters are used in the product part  numbers.

"A" after the dash number for bolts with undrilled shank

"C"  for bolts made of 431 Stainless Steel (CRES)

"H" after the AN number for bolts with drilled head (eg. AN6H-15)

 AN3 through AN20 Series bolts are superseded by NASM3 through 20 Series. The part numbers in both series have not been changed. 

Specification Details:

AN3 through AN20 (REV. 12), Military Specification Sheet: Bolt -Machine, Aircraft [superseded by NASM3 through 20]. This specification covers aircraft machine bolts part numbers, AN3, AN4, AN5, AN6, AN7, AN8, AN9, AN10, AN14, AN16, AN17, AN18, and AN20. AN3 THRU AN20  is canceled and superseded by NASM3 THRU NASM20. The Part Identification Number (PIN) for AN3 THRU AN20 REV. 12 and the part number for NASM3 THRU NASM20 are identical. The part numbers have not been changed.

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.

AVIATIONEU NEW ERA ASTM A193 Grade B6 Series stainless steel stud bolts are manufactured from the ferritic grade AISI 410 stainless steel and can be heat-treated and machined to minimum of 110-ksi or 760 Mpa tensile strength. Like other fasteners in this seies, apart from their high tensile strength, they exhibit excellent resistance to corrosion, durability as well as a long functional work life. They can be used in different applications in industries that demand high tensile strength and corrosion resistance. Sourced by certified manufacturers they are competively priced and offered in different diameters and lengths. Sold by the piece (pc.) in increments of 10 pieces with Minimum Order Quantity (MOQ) 100 pieces. Appearing price is for reference only and differentiates based on wanted bolt sizes. Please contact us for a quotation.

AVIATIONEU NEW ERA Hexagon Bolts are made of Stainless Steel 304/316 (depending on the P/N) with a bright surface treatment and a strength class of A2-70 for SS 304 bolts and A4-70 for SS 316 bolts. They are fully threaded, coarse type, and produced by certified manufacturers in accordance with DIN 933 standard. They are offered in competitive prices in different diameters ("M" designated), indicating the bolt's diameter in mm and lengths in mm. The thread pitch (the distance between threads measured along the length of the bolt) expressed in mm is indicated by the "P" designation in the P/N. Sold in packs of 250, 100 or  25 pieces depending on the selected product. The number of pieces included in each pack is mentioned after "PK" designation.

National Aerospace Standard (NAS) machine bolts are commonly used in aircraft, space shuttles, military vehicles, drones, and other high-performance applications. They are offered in different series to meet application requirements.

NAS 6603 Series Steel Cadmium Plated Shear Hex Head Machine Bolts are offered as part of our own labelled (AVIATIONEU NEW ERA) lines of  fasteners. Sourced from quality manufacturers, AVIATIONEU NEW ERA NAS6604 series shear hexagon head bolts conform to the respective U.S. National Aerospace Standard of the Aerospace Industries' Association. They have a 10-32 thread and a nominal grip diameter of 0.1900 inch. NAS6603 series forms part of NAS family of bolts (NAS6603 through NAS6610 series) which includes hex head, close tolerance, alloy steel, long thread, self-locking & non-locking bolts. Their shearing feature is used to minimize damage to more critical components within the application. They are made from alloy steel with cadmium or chromium finishes and offered  in different grips and lengths in inches with undrilled or drilled head and/or shank. Used in applications where a premium-quality, high strength bolt is necessary. The following letters after the basic part numbers specify the material, finish and drilling condition of these bolts.

No Finish Code for cadmium plated bolts

"C" for chromium plated bolts

"D" for drilled shank bolts

"L" for self-locking bolts

"P" for self-locking bolt with patch type locking element

"H" for bolts with drilled head

More than one code letters may be used in sequence.

AN Clevis bolts are manufactured from nickel steel alloy, SAE 2330 and cadmium plated in same manner as AN3 - AN8 aircraft bolts.They are special-purpose bolts with a a slotted brazier type head and used where a large shearing stress occurs (never in tension). Minimum tensile strength 125,000 PSI. They are available with drilled or undrilled shank (designated by the letter "A" after the dash number for undrilled shank). For the AN12-AN23 bolts the second digit denotes the fine thread machine screw size (e.g. for AN21 the size is 6-40, for AN22 8-36 and for AN23 10-32). For the AN24-AN36 bolts the second digit denotes the diameter in 1/16 inch increments (AN25 has a diameter of 5/16 inch).

AVIATIONEU NEW ERA ASTM A324 Grade 8.8 Series high tensile hexagonal head threaded bolts are produced from medium carbon steel with heat treatment by both quenching and tempering.  They comply with ASTM A324, ASME SA324 standards. Medium carbon steel is less expensive  than other grades and features good ductile and malleable qualities but a lower tensile strength. 

Grade 8 Class bolt capabilities: Yield (strech): 4354 lbs min, Tension (failure): 5024 lbs min, Tensile Strength: 150.000 lbs per square inch.

These bolts are offered in different finishes (zinc plated, plain or hot dip galvanised) and different sizes (diameter M20 to M100 mm / 3/4" to 3.1/2").  Sold by the piece (pc.) in increments of 10 pieces with Minimum Order Quantity (MOQ) 100 pieces. Appearing price is for reference only and differentiates based on wanted bolt sizes. Please contact us for a quotation.

AN 22 Series Clevis bolts are available in NEW SURPLUS condition. Availability till stock exhaustion. They are special-purpose bolts with a a slotted brazier type head and used where a large shearing stress occurs (never in tension). Available with drilled or undrilled shank (designated by the letter "A" after the dash number for undrilled shank). 

ROTAX® aircraft  engines form part of the product portfolio  of BRP-Powertrain GmbH & Co. KG which develops and manufactures engines for snowmobiles, watercrafts, boats, roadsters, all-terrain and side-by-side vehicles, motorcycles, carts, and aircrafts.

BRP-ROTAX® product range includes certified and non certified internal combustion engines, parts and accessories for light and ultralight aircraft.

Different screws, such as hexagonal, allen, fixation and others are used in BRP-ROTAX® aircraft engines (please refer to the respective product presentations). They come in various sizes (mostly Metric) and are offered as certified or non certified parts from the manufacturer. Non certified parts can be used in ultralights or other aircraft not requiring certification of parts for their installation. Certified parts are designated by the letters "CERT" after the part number in the product reference number (SKU).

Aircraft engine  parts are subject to changes from time to time. Some parts may be no longer available or replaced by others with different part numbers. Listed BRP-ROTAX® engine parts do not imply their current availability or suitability for your engine application. Always consult the most recent Illustrated Part Catalogs (IPCs) or other documentation available from the manufacturer for the correct part number before ordering.

ROTAX® aircraft  engines form part of the product portfolio  of BRP-Powertrain GmbH & Co. KG which develops and manufactures engines for snowmobiles, watercrafts, boats, roadsters, all-terrain and side-by-side vehicles, motorcycles, carts, and aircrafts.

BRP-ROTAX® product range includes certified and non certified internal combustion engines, parts and accessories for light and ultralight aircraft.

Different screws, such as hexagonal, allen, fixation and others are used in BRP-ROTAX® aircraft engines (please refer to the respective product presentations). They come in various sizes (mostly Metric) and are offered as certified or non certified parts from the manufacturer. Non certified parts can be used in ultralights or other aircraft not requiring certification of parts for their installation. Certified parts are designated by the letters "CERT" after the part number in the product reference number (SKU).

Aircraft engine  parts are subject to changes from time to time. Some parts may be no longer available or replaced by others with different part numbers. Listed BRP-ROTAX® engine parts do not imply their current availability or suitability for your engine application. Always consult the most recent Illustrated Part Catalogs (IPCs) or other documentation available from the manufacturer for the correct part number before ordering.

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.