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Technical Info

ASTM Fastener Specifications


Standard Description
ASTM A193 / A193M Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications
ASTM A194 / A194M Standard Specification for Carbon Steel, Alloy Steel and Stainless Steel Nuts for Bolts for High Pressure or High Temperature Service or both
ASTM A320 / A320M Standard Specification for Alloy Steel and Stainless Steel Bolting for Low Temperature Service
ASTM A453 / A453M Standard Specification for High-Temperature Bolting, with Expansion Coefficients Comparable to Austenitic Stainless Steels
ASTM A638 / A638M Standard Specification for Precipitation Hardening Iron Base Superalloy Bars, Forgings, and Forging Stock for High-Temperature Service
ASTM F467 / 467M Standard Specification for Nonferrous Nuts for General Use 
ASTM F468 / F468M Standard Specification for Nonferrous Bolts, Hex Cap Screws, Socket Head Cap Screws, and Studs for General Use
ASTM F593 Standard Specification for Stainless Steel Bolts, Hex Cap Screws, and Studs
ASTM F594 Standard Specification for Stainless Steel Nuts
ASTM F2281 Standard Specification for Stainless Steel and Nickel Alloy Bolts, Hex Cap Screws, and Studs, for Heat Resistance and High Temperature Applications
ASTM F2282 Standard Specification for Quality Assurance Requirements for Carbon and Alloy Steel Wire, Rods, and Bars for Mechanical Fasteners
ASTM A1014 / A1014M Standard Specification for Precipitation-Hardening Bolting (UNS N07718) for High Temperature Service
ASTM A1082 / A1082M Standard Specification for High Strength Precipitation Hardening and Duplex Stainless Steel Bolting for Special Purpose Applications
ASTM A307 Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60000 PSI Tensile Strength
ASTM A325 / A325M Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength (Withdrawn 2016)
ASTM A354 Standard Specification for Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners
ASTM A437 / A437M Standard Specification for Stainless and Alloy-Steel Turbine-Type Bolting Specially Heat Treated for High-Temperature Service
ASTM A449 Standard Specification for Hex Cap Screws, Bolts and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength, General Use
ASTM A490 Standard Specification for Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength (Withdrawn 2016)
ASTM A540 / A540M Standard Specification for Alloy-Steel Bolting for Special Applications
ASTM A563 / A563M Standard Specification for Carbon and Alloy Steel Nuts
ASTM A574 / A574M Standard Specification for Alloy Steel Socket-Head Cap Screws
ASTM F436 / F436M Standard Specification for Hardened Steel Washers Inch and Metric Dimensions
ASTM F568 / F568M Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners (Withdrawn 2012)
ASTM F835 / F835M Standard Specification for Alloy Steel Socket Button and Flat Countersunk Head Cap Screws
ASTM F836M Standard Specification for Style 1 Stainless Steel Metric Nuts
ASTM F837 /F873M Standard Specification for Stainless Steel Socket Head Cap Screws
ASTM F844 Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use
ASTM F879 / F879M Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws
ASTM F880 / F880M Standard Specification for Stainless Steel Socket, Square Head, and Slotted Headless-Set Screws
ASTM F901 Standard Specification for Aluminum Transmission Tower Bolts and Nuts
ASTM F3125 / F3125M Standard Specification for High Strength Structural Bolts, Steel and Alloy Steel, Heat Treated, 120 ksi (830 MPa) and 150 ksi (1040 MPa) Minimum Tensile Strength, Inch and Metric Dimensions

accordance with PED requirements. PED certified fasteners are particularly designed to meet the most stringent requirements under low temperature service and high temperature service applications.


DIN EN 10269 Hardness HV
Temperature Range Werkstoff of Bolt / Nut
min. Short TermService max. Long TermService max. Symbol Nummer Name Conditionc min. max.
-120 °C  —  — KB 1.5680 X12Ni5 + NT 157 203
 —  — + QT 173 235
400 °C 500 °C Yd 1.1181 C35E + N 150 200
400 °C 500 °C YK 1.1181 C35E + QT 165 210
400 °C YB 1.5511 35B2g + QT 165 210
-60 °C 500 °C 550 °C KG 1.7218 25CrMo4 + QT 195 240
-100 °C 500 °C GC 1.7225 42CrMo4 + QT 275 337
500 °C 550 °C GA 1.7709 21CrMoV5-7 + QT 225 272
600 °C 550 °C GB 1.7711 40CrMoV46 + QT 272 320
550 °C 600 °C Ve 1.4923 X22CrMoV12-1 + QT 1e 256 303
550 °C 600 °C VHf 1.4923 X22CrMoV12-1 + QT 2f 287 367
600 °C 600 °C VW 1.4913 X19CrMoNbVN11-1 + QT 287 367
650 °C 670 °C S 1.4986 X7CrNiMoBNb16-16 + WW + P 210 272
-196 °C 650 °C 650 °C SD 1.4980 X6NiCrTiMoVB25-15-2 + AT + P 287 367
-196 °C 650 °C 800 °C SB 2.4952 NiCr20TiAl + AT + P 320 417

Maximum temperatures with specified proof strengths and tensile strengths. bMaximum temperatures with specified creep strengths and creep rupture strengths cHeat treatment condition as defined in DIN EN 10269:2006-07: + N: Normalised + NT: Normalised and Tempered + QT: Quenched and Tempered + WW: Warm Worked + AT: Solution Annealed + P: Precipitation Hardened d Applies to Nuts only eSymbol V denotes grade X22CrMoV12-1 as in DIN EN 10269 with a 0,2 % proof strength Rp 0,2 ≥ 600 N/mm2 (+QT 1). fSymbol VH denotes grade X22CrMoV12-1 as in DIN EN 10269 with a 0,2 % proof strength Rp 0,2 ≥ 700 N/mm2 (+ QT 2)