M 292M/M 292-2009
用于高压或高温服务 或两者的螺栓用碳钢和合金钢螺母的标准规范

Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High-Pressure or High-Temperature Service@ or Both

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标准号

M 292M/M 292-2009

发布

2009年

发布单位

AASHTO - American Association of State Highway and Transportation Officials

 

 

适用范围

"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 hightemperature 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. When annealed and strain-hardened austenitic stainless steel is ordered in accordance with Supplementary Requirement S1@ the purchaser should take special care to ensure that Section 8.2.2@ Supplementary Requirement S1@ and Appendix X1 are thoroughly understood. Supplementary requirements (Sections S1 through S6) of an optional nature are provided. These shall apply only when specified in the inquiry@ contract@ and order. This specification is applicable to orders in either SI units (as M 292M) or inch?Cpound units (as M 292). SI units and inch?Cpound units are not necessarily equivalent. Inch?Cpound units are shown in brackets in the text. Material shall be furnished to SI units when the order specifies the applicable ""M"" designation."

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