常用螺纹标准大全

美制细螺纹公制迫牙丝攻钻孔径 规格(丝牙外径）标准径最大最小规格精度等级 7－G81.251.3051.182G4－G6G7－G8G9 NO.1-72(1.854)1.551.6121.474M1.0*0.250.860.88 NO.2-64(2.134)1.851.9121.756M1.1*0.250.960.98 NO.3-56(2.515)2.12.1972.025M1.2*0.251.061.08 NO.4-48(2.345)2.42.4562.271M1.4*0.31.241.25 NO