机械螺钉的机械性能和质量要求

[中文适用范围]： 本文件已被宣布为“稳定”，并且将不再接受货币定期审查。用户负责验证参考资料和持续适用性或技术要求。新技术可能存在。该 SAE 标准涵盖了两种等级碳钢、开槽和凹进、82 度平沉头、82 度椭圆形沉头、盘形、圆角、六角和六角垫圈头机器螺钉（尺寸为 4 至 3 号/）的机械和质量要求4用于汽车及相关行业。 ASME B18.6.3 中涵盖了这些螺钉的尺寸。 [外文原描述]： This SAE Standard covers the mechanical and quality requirements for two grades of carbon steel, slotted, and recessed, 82 degrees flat countersunk, 82 degrees oval countersunk, pan, fillister, hex, and hex washer head machine screws in sizes No. 4 through 3/4 in for use automotive and related industries. The dimensions of these screws are covered in ASME B18.6.3.Cross Reference: ASME/B18.6.3,J409_202107