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 6604 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 1/4-28 thread and a nominal grip diameter of 0.2500 inch. NAS6604 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).

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. NAS Standard Machine Screws meet aerospace standards and come in different types and sizes structured in different series including NAS1101, NAS1102, NAS1189, NAS1190, NAS1191, NAS1635, NAS1801, NAS1802, NAS220, NAS229, NAS333, NAS514, NAS517, NAS560, NAS583, NAS600, NAS623 and NAS662.

AVIATIONEU NEW ERA NAS1801/NAS1802 series of machine (non structural) screws are aeronautical standard fully threaded Phillips hexagon head screws replacing those of NAS1096 series of same sizes. NAS1801 screws are made from alloy steel per MIL-S-6049 with a Cadmium finish per QQ-P-416 Type II and feature a 160,000 - 185,000 psi tensile strength. NAS1802 screws are made from A-286 Corrosion Resisting Steel and are passivated per QQ-P-35. They are both offered in different thread sizes and lengths in inches and sold in pieces or packs of specified number of screws indicated after the letters "PK" in the product reference number (SKU). 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. AN8H-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.

Different screws used on Textron Aviation Cessna, Beechcraft and Hawker aircraft. Also available as FAA-PMA approved parts from other manufacturers.

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.

AVIATIONEU NEW ERA high tensile stainless steel threaded bolts are manufactured from AISI 410 stainless steel and heat-treated and machined to minimum of 110-ksi or 760 Mpa tensile strength. They are dual ASTM & ASME certified (ASTM A193 B6: Class 1 Stainless Steel, ASME B1.1 2A/3A Inch Unified Threads and B1.13M 6h Metric Coarse Threads). In addition to their high tensile strength, they exhibit excellent resistance to corrosion, good dimensional stability, durability as well as a long functional work life. They can be used in different industries demanding high tensile strength and corrosion resistance like marine, chemical & petrochemical etc. Sold in in packs (pk) of 25 bolts/pk in different head, body diameters and thread lengths in inches with Minimum Order Quantity (MOQ) 10 packs. Please refer to the attached specifications table. Appearing price is for reference only and differentiates based on wanted bolt sizes. Please contact us for a quotation.

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.

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.

Machine sccrews meeting National Aerospace Standards (NAS), developed and maintained by the US Aerospace Industries Association (AIA), are offered in different series.  

AVIATIONEU NEW ERA AIA NAS 623 Series are aeronautical standard non structural pan head cross recess short thread machine screws. They are made from alloy steels 4140 (UNS G41400)  per MIL-S-5626, 4340 (UNS G43400)  per MIL-S-5000 or 8740 (UNS G87400 per MIL-S-6049. They are cadmium plated per QQ-P-416 Type II, Class 2. Heat treatment 160,000 to 180,000 psi ultimate tensile streangth in accordance with SPEC-MIL-H-6875.They are offered in different thread sizes, grips and lengths in inches and sold in pieces or convenient packs of specified number of screws per pack indicated by the number after the letters "PK" in the product reference number (SKU).

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.

AVIATIONEU NEW ERA AN526 series screws are mil spec truss-head non-structural machine screws made of carbon steel and cadmium plated. Minimum tensile strength 55,000 psi. Available in slot head or Phillips recessed head indicated by the letter "R" in the product part number. They are available in different sizes and lengths in inches and sold in packs. The number of screws per package is indicated after the letters "PK" in the product reference number (SKU). For more information, please refer to the individual product presentations, 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.

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. 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 AN507 series screws are mil spec threaded 100 degree countersunk non structural screws with Phillips head. They have been replaced by the respective screws of MS24693 series of materials and finishes. These screws are made of carbon steel and cadmium plated, stainless steel unplated or brass with chemical black finish. They are sold in pieces and offered in different sizes in the following materials and finishes with the corresponding notations after MS24693 and before the size number:

Carbon Steel Cadmium plated (letter "S") 

300 Series Stainless Steel unplated (letter "C")

Brass with chemical black finish, (letter "BB")

For more information, please refer to the individual product presentations, 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 structured in different series based on the standard of their conformance. Some of the screws commonly used include NAS204 through NAS235 and AN509/AN525 series. 

MS24694 Series structural screws have a 100° countersunk Phillips head. They replace the respective AN509 series structural screws of materials and finishes. Minimum tensile strength for steel is 125,000 psi. They are fabricated from alloy steel and cadmium plated per specification QQ-P-416A, Type II, Class 3 or 300 Series Stainless Steel unplated designated by the letters "S" and "C" respectively in the product part number after MS24694 and before the size number.

Sourced from quality suppliers, AVIATIONEU NEW ERA MS24694 series structural screws are offered in different thread sizes and lengths in inches and sold in pieces or packs of specified number of screws designated after the letters "PK" in the product reference number (SKU). For more information, please refer to the individual product presentations, the supplied documentation or contact us.

AVIATIONEU NEW ERA Screw Extraction Kit is intended for use as a removal tool of stuck or broken screws, bolts or studs.

The kit consists of a 6-piece standard screwdriver set and a T Type steel single sided ratchet wrench adjustable to handle fasteners of M3 to M8 sizes. 

It is a high quality, versatile, convenient, efficient and long service life kit that can be used for home and professional applications in bikes, cars, electronics, household appliances, mobile repairs and other uses.

The 6-piece standard screwdriver set and the ratchet wrench can be bought separately although the kit provides a cost effective solution.

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).

These bolts 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.

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. 

Different bolts used on Textron Aviation Cessna, Beechcraft and Hawker aircraft. Also available as FAA-PMA approved parts from other manufacturers.

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.