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零件	螺钉	垫圈
品种代号	Q 254	Q 415
机械性能	GB/T 3098.1，4.8 级	-
表面处理	镀锌钝化，QC/T 625； P=0.5~0.8，Fe/Ep · Zn5； P=1~1.25，Fe/Ep · Zn8	镀锌钝化，QC/T 625； P=0.5~0.8，Fe/Ep · Zn5； P=1~1.25，Fe/Ep · Zn8
其它技术要求	垫圈应能自由转动而不脱落	垫圈应能自由转动而不脱落
验收及包装	GB/T 90	GB/T 90

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