Standard Specification for
Carbon and Alloy Steel Nuts for Bolts for
High-Pressure or High-Temperature Service, or Both
AASHTO Designation: M 292M/M 292-08
ASTM Designation:A 194/A 194M-07a
1.1. This specification covers a variety of carbon, alloy, and martensitic stainless steel nuts in the size range M6 through MIOO [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.
1.2.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.
When annealed and strain-hardened austenitic stainless steel is ordered in accordance with Supplementary Requirement S 1,
the purchaser should take special care to ensure that Section 8.2.2, Supplementary Requirement SI, and Appendix Xl are thoroughly understood.
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