英制管螺纹内径外径对照表.doc

英制管螺纹内径外径对照表尺寸代号 每寸牙数 大径 中径 小径 建议底孔 基准距离 牙数 1/8 27 10.242 9.489 8.736 8.6 4.102 4.36 1/4 18 13.616 12.487 11.358 11.1 5.786 4.10 3/8 18 17.055 15.926 14.797 14.5 6.096 4.32 1/2 14 21.223 19.772 18.321 17.9 8.128 4.48 3/4 14 26.568 25.117 23.666 23.2 8.611 4.75 1 11.5 33.228 31.461 29.694 29.2 10.160 4.60 1-1/4 11.5 41.985 40.218 38.451 37.9 10.668 4.83 1-1/2 11.5 48.054 46.287 44.520 43.9 10.668 4.83 常用螺纹规范对照表符号螺纹种类规范牙型角M公制粗牙ISO26160S细小螺丝ISOR150160UNC统一牙粗牙ISO26360UNF统一牙细牙ISO26360UNEF统一牙特细牙ISO26360UN统一牙固定牙ISO26360UNS统一牙特殊牙-60NC美制牙粗牙ANSIB1.160NF美制牙细牙ANSIB1.160NEF美制牙特细牙ANSIB1.160N美制牙固定牙ANSIB1.160NS美制牙特殊牙ANSIB1.160BSW英制牙粗牙BS8455BSF英制牙细牙BS8455BC自行车牙JISB022560SM针车用JISB022660CTV自行行车用风嘴JISD942260TV汽车用风嘴JIDD420760BSC英制自行车BS81160BA英制小螺丝BS933047Tr公制爱克母牙ISO290230TW爱克姆牙JISB022229ACME爱克姆牙ANSIB1.529STUB-ACME浅牙爱克姆ANSIB1.829C平行管用螺纹ISO228/155BSPF英制平行管螺纹BS277955PF英制平行管螺纹ISB020255R管用推拔管用ISO7/1551/16Rc管用推拔内螺纹ISO7/1551/16Rp管用平行内螺纹ISO7/155PT推拔管用JISB0203551/16PS平行内螺纹JISB020355BSP英制管牙BS21.277955NPT美制一般推拔管用ANSIB2.1601/16NPTR美制栏杆接头用ANSIB2.1601/16NPS美制一般平行管用ANSIB2.160NPSM美制平行管用装配器用ANSIB2.160NPSL美制锁紧螺帽用ANSIB2.160NPSH美制水管用ANSIB2.160NPSC美制管接头用ANSIB2.160NH美制消防水管用ANSIB2.160NPSF美制干封管用平行内螺纹ANSIB2.160NPTI美制干封管用平行ANSIB2.160NPTF美制干封管用推拔ANSIB2.1601/16NGT美制瓦斯用推拔ANSIB57.1601/16NGS美制瓦斯用平行ANSIB57.160NGO美制瓦斯用出口ANSIB57.160SGT美制瓦斯用特殊ANSIB57.1601/8E电灯泡用JISC7709圆V瓦斯桶凡而用JISB8245/6553/26C薄铜电线管用JISB020480常用规格（公制）M1.2*0.25M2.5*0.45M6*0.75M10*0.75M1.4*0.3M2.6*0.45M6*1M10*1M1.6*0.35M3*0.5M7*0.75M10*1.25M1.7*0.25M3*0.6M7*1M10*1.5M1.7*0.35M3.5*0.6M8*0.75M11*1M1.8*0.35M4*0.5M8*1M11*1.5M2*0.4M4*0.7M8*1.2512*1M2.2*0.45M5*0.5M9*1M12*1.25M2.3*0.45M5*0.8M9*1.25M12*1.5常用规格（美制）0-80UNF5-40UNC10-32UNF5/16-32UNEF1-64UNC5-44UNV12-24UNC3/8-16UNC1-72UNF6-32UNC12-28UNF3/8-24UNF2-56UNC6-40UNF12-32UNEF3/8-32UNEF2-64UNF5/32-32UNC1/4-20UNC7/16-14UNC3-48UNC8-32UNC1/4-28UNF7/16-20UNF3-56UNF8-36UNF1/4-32UNEF7/16-28UNEF4-40UNC3/16-24UNC5/16-18UNC1/2-13UNC4-48UNF10-24UNC5/16-24UNF1/2-20UNF常用规格（英制）1/8-40 1/2-12 1-8 2-4.55/32-329/16-121-1/8-72-1/8-43/16-245/8-111-1/4-72-1/4-47/32-2411/16-111-3/8-62-1/2-41/4-2