ASTM A 540/A 540M - 06 Standard Specification for Alloy-Steel Bolting Materials for Special Applications

American Society for Testing and Materials (ASTM). Current edition approved March 1, 2006. Published March 2006. Originally approved in 1965. Last previous edition approved in 2005 as A 540/A 540M – 05. 8 p. This specification covers regular and special-quality alloy steel bolting materials which may be used for nuclear and other special applications. Bolting materials as used in this specification cover rolled or forged bars, rotary pierced or extruded seamless tubes, bored bars, or forged hollows from forged or rolled bar segments to be manufactured into bolts, studs, washers, and nuts.