AVIATIONEU NEW ERA NAS1581 Series Screws SKU: AVEUNE-SCRW-NAS1581
The NAS1581 Series screws (also termed as bolts) are high strength, close tolerance, reduced (shear) head, countersunk screws offered as part of our own branded (AVIATIONEU NEW ERA) product lines. They come in different materials and finishes designated by the following letters in their product reference number (SKU) which is formed as a combination of the material, diameter, drive style, grip length and option of the screw:
Materials
(A) or (F) = Alloy Steel, 4140,4340 or 8740, Heat treated to 160-180ksi. Cad 2 plated. Material Code (A) has been superseded by Code (F)
(V) = Titanium (6al-4v) Heat treated to 160-180ksi. No finish. Material Code (V) has been cancelled Dec.1991
Diameters: Numbers 3 to 10
Drive Styles
(R)= Offset Cruciform, (Torq-set) R, for diameters 3,4 & 5.
(T) = Offset Cruciform, (Torq-set) R for diameters 6 and up.
(H) = Dovetail Slot
Grip Lengths
The grip length for Countersunk Head Fasteners (T in the supplied table) includes the head and extends to the full cylindrical portion of the shank. The Grip Length for NAS1581 Series screws is measured in 1/16ths of an inch. + or - .010
AVIATIONEU NEW ERA NAS1581 Series screws are offered in pieces or kits for convenience and economy.
For more information, please refer to the supplied documentation or contact us.
The NAS1630 Series screws are pan head, short thread, offset cruciform machine screws offered as part of our own branded (AVIATIONEU NEW ERA) product lines. These screws use PHILLIPS Screw-Torq-Set® drive system with significant benefits outlined below. Sourced from quality manufacturers they are offered in alloy steel or corrosion resistant steel (CRES) and different thread sizes and legths in inches. Sold in packs each containing a specified number of screws. The number of screws in each pack is specified after the letters "PK" in the product reference code (SKU).
PHILLIPS Screw-Torq-Set® Drive System Features & Benefits
Offset cruciform shape with straight wing walls for greater torque transfer.
Removal walls larger than drive walls. Facilitates disassembly without drill outs.
Specific driver for each diameter fastener. Assures optimum torque for each size and strong head configuration.
Compatible with standard PHILLIPS ACR® ribbed TORQ-SET® drivers. Allows use of ribbed tools with standard screws
PSC quality inspections. Assures global system quality and compatibility.
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).
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 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.
Tapping screws eliminate the need for drilled holes, as they are designed to cut their own hole as it is screwed into the materials. They are commonly used in cases when the material is too thin (e.g. sheet metals), there is no rear access for installation of a nut or when disassembly is required at a later stage and therefore blind rivets can not be an alternative. Sourced from quality producers, tapping screws are offered as part of our own labelled (AVIATIONEU NEW ERA) product lines conforming to aerospace/military or industrial standards/specifications.
AVIATIONEU NEW ERA AN530 series screws are mil spec tapping screws offered in different sizes and sold in packs. Those with a Philips recessed head are indicated by the letter "R" in the product part number. Tapping screws conforming to ASME specifications are also available as part of AVIATIONEU NEW ERA product portfolio (see separate product presentation). 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.
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. NAS Standard Machine Screws meet aerospace standards and are offered in different series. AVIATIONEU NEW ERA 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.
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 6203 through NAS 6210 series include hex head, close tolerance, alloy steel, short thread, self-locking & non-locking bolts.
Sourced from quality manufacturers, NAS 6203 through NAS 6210 series are offered as part of our own branded (AVIATIONEU NEW ERA) product lines. These fine-threaded, dimpled-head hex bolts have a minimum tensile strength of 160,000 psi and a minimum shear strength of 95,000 psi. Thread length is consistent within each diameter (1103/6203 series have a shorter thread), and grips are available in 1/16” increments beginning at 1/16”. Used in applications where a premium-quality, high strength bolt is necessary. They come in different nominal diameters: NAS 6203: 3/16 in. (0.1875"), NAS 6204: 1/4 in. (0.25"), NAS 6205: 5/16 in. (0.3125"), NAS 6206: 3/8 in. (0.375"), NAS 6208: 1/2 in. (0.500"), NAS 6210: 5/8 in. (0.625").
NAS 6203 series shear hexagon head bolts with a 10-32" thread supersede NAS 1103 high strength bolts. Their shearing feature is used to minimize damage to critical components of 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. They are sold in pieces.
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
"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.
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 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.
AN525/AN525R Series high-strength structural washer head (AN525) and cross-recessed (Phillips) head (AN525R) screws, fabricated from alloy steel per specification QQ-S-689. Tensile strength 125,000 PSI. Cadmium plated per QQ-P-416A, Type II, Class 3.
The AN525 washer head structural screws provide a large contact area. The AN509R (100° countersunk) Phillips head screws are used in countersunk holes where a flush surface is necessary. These have been replaced by MS24694 Series structural screws of the respective materials and finishes.
Structural screws have a definite grip and the same shear strength as a bolt of the same size. Shank tolerances are similar to AN hex head bolts, and the threads are National Fine. Structural screws are available with round, brazier, or countersunk heads. The recessed head screws are driven by either a Phillips or a Reed and Prince screwdriver. Sourced from quality suppliers, these structural screws are offered as part of our own labelled (AVIATIONEU NEW ERA) product lines in different thread sizes and lengths in inches and sold in pieces. For more information, please refer to the individual product presentations, the supplied documentation or contact us.
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.
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.
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 6203 through NAS 6210 series include hex head, close tolerance, alloy steel, short thread, self-locking & non-locking bolts.
Sourced from quality producers, NAS 6203 through NAS 6210 series are offered as part of our own labelled (AVIATIONEU NEW ERA) lines of fasteners. These fine-threaded, dimpled-head hex bolts have a minimum tensile strength of 160,000 psi and a minimum shear strength of 95,000 psi. Thread length is consistent within each diameter (NAS 1103/6203 series have a shorter thread), and grips are available in 1/16” increments beginning at 1/16”. Used in applications where a premium-quality, high strength bolt is necessary. They come in different nominal diameters: NAS 6203: 3/16 in. (0.1875"), NAS 6204: 1/4 in. (0.25"), NAS 6205: 5/16 in. (0.3125"), NAS 6206: 3/8 in. (0.375"), NAS 6208: 1/2 in. (0.500"), NAS 6210: 5/8 in. (0.625").
NAS 6205 series shear hexagon head bolts with a 5/16-24" thread supersede NAS 1105 high strength bolts. Their shearing feature is used to minimize damage to critical components of 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. They are sold in pieces.
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
"L" / "P" for self-locking bolts/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.
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. AN3H-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.
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. 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 NAS333/NAS334 series of machine (non structural) screws (also termed as bolts) are aeronautical standard 100 Deg. standard flush head, shear close tolerance screws. They are made from alloy steel per MIL-S-6049 with a Cadmium finish per QQ-P-416 Type II. They are both offered in different thread sizes, grips and lengths in inches and sold in pieces. CPA indicates a plated Phillips recess. The length and grip of the screw are indicated by numbers after the last dash in the product part number. 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. 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 NAS583 series of machine (non structural) screws are aeronautical 100 deg. alloy steel cadmium plated flush head close tolerance machine screws offered in different thread sizes and lengths in inches and sold 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.
AVIATIONEU NEW ERA Hexagon Socket Head Screws are made of Carbon Steel, Alloy Steel with a Black Oxide or Galvanized finish (depending on the P/N) and a strength class of 4.8 or other as specified by the letter "S" in the P/N. They are fully threaded, coarse type, and produced by certified manufacturers in accordance with DIN 7984 standard. They are offered in competitive prices in different diameters ("M" designated), indicating the screw's diameter in mm and lengths in mm. The thread pitch (the distance between threads measured along the length of the screw) expressed in mm is indicated by the "P" designation in the P/N. Sold in packs of 500, 250 or 50 pieces depending on the selected product. The number of pieces included in each pack is mentioned after "PK" designation.
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. NAS 6203 through NAS 6210 series include hex head, close tolerance, alloy steel, short thread, self-locking & non-locking bolts.
Sourced from quality manufacturers, NAS 6203 through NAS 6210 series are offered as part of our own branded (AVIATIONEU NEW ERA) product lines. These fine-threaded, dimpled-head hex bolts have a minimum tensile strength of 160,000 psi and a minimum shear strength of 95,000 psi. Thread length is consistent within each diameter (1103/6203 series have a shorter thread), and grips are available in 1/16” increments beginning at 1/16”. Used in applications where a premium-quality, high strength bolt is necessary. They come in different nominal diameters: NAS 6203: 3/16 in. (0.1875"), NAS 6204: 1/4 in. (0.25"), NAS 6205: 5/16 in. (0.3125"), NAS 6206: 3/8 in. (0.375"), NAS 6208: 1/2 in. (0.500"), NAS 6210: 5/8 in. (0.625").
NAS 6206 series shear hexagon head bolts with a 3/8-24" thread supersede NAS 1106 high strength bolts. Their shearing feature is used to minimize damage to critical components of 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. They are sold in pieces.
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
"L" / "P" for self-locking bolts/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.
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. 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 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.
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.
The NAS1581 Series screws (also termed as bolts) are high strength, close tolerance, reduced (shear) head, countersunk screws offered as part of our own branded (AVIATIONEU NEW ERA) product lines. They come in different materials and finishes designated by the following letters in their product reference number (SKU) which is formed as a combination of the material, diameter, drive style, grip length and option of the screw:
Materials
(A) or (F) = Alloy Steel, 4140,4340 or 8740, Heat treated to 160-180ksi. Cad 2 plated. Material Code (A) has been superseded by Code (F)
(V) = Titanium (6al-4v) Heat treated to 160-180ksi. No finish. Material Code (V) has been cancelled Dec.1991
Diameters: Numbers 3 to 10
Drive Styles
(R)= Offset Cruciform, (Torq-set) R, for diameters 3,4 & 5.
(T) = Offset Cruciform, (Torq-set) R for diameters 6 and up.
(H) = Dovetail Slot
Grip Lengths
The grip length for Countersunk Head Fasteners (T in the supplied table) includes the head and extends to the full cylindrical portion of the shank. The Grip Length for NAS1581 Series screws is measured in 1/16ths of an inch. + or - .010
AVIATIONEU NEW ERA NAS1581 Series screws are offered in pieces or kits for convenience and economy.
For more information, please refer to the supplied documentation or contact us.