螺丝攻牙钻孔径和滚丝径对照表

1、螺丝攻牙钻孔径和滚丝径对照表公制粗螺纹美制粗螺纹规格标准径2级牙钻孔径规格（UNC标准径2级牙钻孔径1最大最小最大最小XXXXXXXNO8-32XXX1/4-201X5/16-18X3/8-16X7/16-14X1/2-13jjX9/16-121X5/8-11X3/4-10X7/8-9X1X1-1/8-7X1-1/4-7X1-3/8-6X1-1/2-6X1-3/4-5MIX2-4-1/2MIXM12XM14XM16MIXM2XM2XM24XM27XM3X签名档:螺丝攻牙钻孔径和滚丝径对照表公制细螺纹美制细螺纹规格标准径2级牙钻孔径规格（UNC标准径2级牙钻孔径最大最小最大最小XXXXXXXXX

2、XX1/4-28X5/16-24X3/8-24X7/16-20X1/2-20X9/16-18X5/8-18X3/4-16X7/8-14X1-12X1-1/8-12X1-1/4-12X1-3/8-12X1-1/2-12XXXM1(XM1(XM1(XM1(X螺丝攻牙钻孔径和滚丝径对照表公制细螺纹美制细螺纹规格标准径2级牙钻孔径规格（UNC标准径2级牙钻孔径最大最小最大最小M1XM11XM12M12M12M12M14XM14XM15M15M16M16M17XM17XM18M18M18M20XM2XM2XM2XM2XM22M24XM24XM24XM25M25M25M26XM27XM27XM27XM28

3、M28M28M3(XM3(XM3(XM3(XM32M32M33M33M33M35-M36M36M36签名档:螺丝攻牙钻孔径和滚丝径对照表公制挤压丝攻钻孔径美制挤压丝攻钻孔径规格精度等级规格（UNC精度等级G4-G6G7-G8G9G4-G6G7-G8G9X一一X一一X一一X一一X一一X一一X一一X233X1/4-20一X1irraniiawnimnib5/16-18一X3/8-16一X7/16-14一-X1/2-13X一X一一X一一X一一X一X一M1XiM1X一M1X1/4-28M1X5/16-243/8-24一7/16-20一1/2-20一签名档:美制特细螺纹英制电器螺纹规格标准径2级牙钻孔径

4、规格钻孔径最大最小2BA-323BA5/16-324BA-32L5BA-286BA-289/16-245/8-243/4-207/8-201-20签名档:螺丝攻牙钻孔径和滚丝径对照表英制螺纹公制螺纹针车用螺纹j规格(UNEF)钻孔径规格滚丝径规格滚丝径硬材软材W1/8-40M3X5/32-32X1j3/16-24X1/4-20X5/16-18X3/8-16X7/16-14Xj1/2-12Xi9/16-12X5/8-11X3/4-10Xi7/8-9X1j-8SM3/8-28j1-1/8-7SM7/16-281-1/4-7SM7/16-16j=-签名档:英制管螺纹英制管螺纹美制管螺纹规格标准径钻孔

5、径规格标准径有交牙部之长度（最小）中之毋螺牙内径标准长度（最小）中之毋螺牙内径规格钻孔径最大最小使用绞刀时不用绞刀时NPTNPS使用绞刀时不用绞刀时PS1/16-28PT1/16-281/16-27PS1/8-28PT1/8-281/8-27PS1/4-19PT1/4-191/4-18PS3/8-19PT3/8-193/8-1843、,)PS1/2-14PT1/2-141/2-14PS3/4-14PT3/4-143/4-14jPS1-11PT1-111-11-1/21j1PS1-1/4-11PT1-1/4-111-1/4-11-1/2PS1-1/2-11PT1-1/2-111-1/2-11-1/211ijPS2-11PT2-112-11-1/2签名档:英制螺纹螺母孔径英制螺纹圆拄管螺纹螺纹直径戾寸）每英寸牙数钻头直径（毫米）螺纹直径（英每英寸牙数钻头直径（毫铸铁、黄铜、青铜钢、可锻铸铁寸）米）3/16241/8281/4201/4195/16183/8193/81681/2