ASTM A 194/A 194M - 13 Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both

American Society for Testing and Materials (ASTM). Current edition approved Oct. 1, 2013. Published October 2013. Originally approved in 1936. Last previous edition approved in 2012 as A194/A194M–12a. 12 p. This specification covers a variety of carbon, alloy, and martensitic stainless steel nuts in the size range 1⁄4 through 4 in. and metric M6 through M100 nominal. It also covers austenitic stainless steel nuts in the size range 1⁄4 in. and M6 nominal and above. These nuts are intended for high-pressure or high-temperature service, or both. Grade substitutions without the purchaser’s permission are not allowed.