ASTM F 436 - 07 Standard Specification for Hardened Steel Washers

American Society for Testing and Materials (ASTM). Current edition approved Aug. 1, 2007. Published August 2007. Originally approved in 1976. Last previous edition approved in 2004 as F 436 – 04. 6 p. This specification covers the chemical, mechanical, and dimensional requirements for hardened steel washers for use with fasteners having nominal thread diameters of 1⁄4 through 4 in. These washers are intended for general-purpose mechanical and structural use with bolts, nuts, studs, and other internally and externally threaded fasteners. These washers are suitable for use with fasteners covered in Specifications A 325, A 354, A 449, and A 490.