AASHTO M 292M/M 292-08 PDF
Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High-Pressure or High-Temperature Service, or Both
standard by American Association of State and Highway Transportation Officials, 08/01/2008
This specification covers a variety of carbon, alloy, and martensitic stainless steel nuts in the size range M6 through M100 [1/4 through 4 in.] nominal. It also covers austenitic stainless steel nuts in the size range M6 [1/4 in.] 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.
Bars from which the nuts are made shall be hot-wrought. The material may be further processed by centerless grinding or by cold drawing. Austenitic stainless steel may be solution annealed or annealed and strain-hardened.
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