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Specifications For Fasteners viz. Nuts,Bolts & Washers


ASTM - Americal Society for Testing and Materials

The American Society for Testing and Materials has developed different standard & speficiation for Bolt fasteners for variety of uses.



Below are some Specifications Designed for Materials Used for Fastener Manufacturing, Includes Nuts,Bolts,Studs & Washers.

ASTM Specifications for Bolt Fasteners

A193  - Alloy steel and stainless steel bolting materials for high temperature or high pressure service.
  •  - Carbon steel bolts and studs, 60,000 psi tensile strength.
  •  - Alloy steel and stainless steel bolting materials for low temperature service.
  •  - Structural bolts, steel, heat treated, 120/105 ksi minimum tensile strength.
  •  - Quenched and tempered alloy bolts, studs, and other externally threaded fasteners.
  •  - Quenched and tempered steel bolts and studs for general use.
  •  - Structural bolts, alloy steel, heat treated, 150 ksi minimum tensile strength.
F568  - Standard for metric bolts, screws and studs that are used in general engineering applications
  •  - Stainless steel bolts, hex cap screws, and studs.
  •  - Anchor bolts designed to anchor structural supports to concrete foundations.


ASTM Specifications for Nut Fasteners

A194  -  Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service
  •  - Standard Specification for Wrought Cobalt-20Nickel-20Chromium-3.5Molybdenum-3.5Tungsten-5Iron Alloy for Surgical Implant Applications
  •  - Standard Specification for Stainless Steel Nuts , Corrosive service applications
  •  - Standard Specification for Nonferrous Nuts for General Use , general use


ASTM Specifications for Washers

F436  - Specification for Hardened Steel Washers , carbon steel, steel, washers, weathering steel, Hardened steel washers
  •  - Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use
  •  - Standard Specification for Compressible-Washer-Type Direct Tension Indicators for Use with Structural Fasteners


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