螺纹底孔对照表.doc

螺纹底孔直径 公制粗牙螺纹螺纹代号钻头直径HSS硬质合金M20。41。61.65M30。52。52.55M40.73。33.4M50.84.24.3M61。05.0 5。1M81。256.86.9M101。58。58.7M121。7510。310.5M142。012。0 12。2M162.014.0 14.2M182。515。515.7M202.517。517.7M243.021。0 M303。526.5M364。032.0 M424.537。5M454.540.5M485.043.0 细牙螺纹 螺纹代号钻头直径铝硬质合金M20.251.751。75M30。352.72。7M40.53。53.55M50。54。54。55M60。756。3 6。35M81.077。1M80。757。37。35M101.099。1M101。258.88。9M100。759.39.35M121。510。510.7M121。2510。810.9M121.01111。1M141.512。5 12.7M141。013.0 13.1M161.514。5 14.7M161。015。0 15.1M181。516.516.7M181。01717.1M202。01818.3M201.518.518.7M201。01919。1M242.022.0 M241。522.5 M241.023.0 M30327M30228M301。528.5M301.529M363.033。0 M36234.0 M361。534。5 M42438M42339M42240M421.540.5M45441M45342M45243M451.543.5