无头铆钉是公称直径d=1.4~10mm的无头铆钉。标记示例: 公称直径d=5mm、公称长度l=30mm、材料为BL2、不经表面处理的无头铆钉的标记: 铆钉 GB 1016 5×30公称直径d=1.4~10mm的无头铆钉:ddttl公称maxminmaxminmaxmin1.41.41.340.770.651.741.266~14221.941.321.141.741.266~202.52.52.441.721.542.241.768~30332.941.921.742.742.268~38443.922.922.743.242.7610~50554.923.763.524.293.7114~60665.924.664.425.294.7116~60887.96.165.926.295.7118~6010109.97.26.97.356.6522~60l的范围:公称6810121416182022