SAE J123-2012
SAE J 123-2012已作废

Surface Discontinuities on Bolts@ Screws@ and Studs in Fatigue Applications

标准号

SAE J123-2012

发布日期

2012年04月01日

实施日期

2012年04月12日

废止日期

2012-04-01

中国标准分类号

/

国际标准分类号

/

发布单位

SAE - SAE International

引用标准

11

适用范围

This SAE Recommended Practice defines@ illustrates@ and specifies allowable limits for various types of surface discontinuities that may occur or become apparent during the manufacture and processing of bolts@ screws@ and studs which are primarily intended for use in automotive assemblies subjected to severe dynamic stresses and necessitating use of high strength fasteners having appropriate fatigue-resistant properties. The basic document does not include inspection sampling requirements. It is intended that the purchaser shall specify@ in the original inquiry and purchase order@ the inspection sampling requirements which the producer must satisfy to demonstrate the acceptability of bolts and screws with respect to surface discontinuities. Appendix A outlines inspection sampling plans applicable when such requirements are not specified by the purchaser in the original inquiry@ purchase order@ or in related specifications. When the provisions of this document are specified by the purchaser@ the fastener manufacturer must significantly increase production controls including machine set up@ blank diameters@ die lubrication@ in-process inspection requirements@ and reduced production rate.