螺纹基本尺寸.doc

M (metric coarse thred)Threa dimDrilldiapitchM4M4.5M5M6M7M8M9M10M11M12M14M16M18M20M22M24M27M30M33M36M39M42M45M48M523.303.704.205.006.006.807.808.509.5010.2012.0014.0015.5017.5019.5021.0024.0026.5029.5032.0035.0037.5040.5043.0047.000.70.750.8111.251.251.51.51.75222.52.52.5333.53.5444.54.555M (metric fine thread)Drill dia =tap dia pitchM (metric coarse thred)ThreadDimDrilldiapitchM4M5M6M7M8M10M12M14M163.704.635.506.517.409.2511.1213.0015.000.70.8111.251.51.7522TP1=No of threads/inchUNF (Unitfed finne thread)Thread dimDrilldiapitchUNF No 6UNF No 8UNF No 10UNF No 12UNF 1/4UNF 5/16UNF 3/8UNF 7/16UNF 1/2UNF 9/16UNF 5/8UNF 3/4UNF 7/8UNF 1UNF 1 1/83.003.504.104.655.506.908.509.9011.5012.9014.5017.5020.5023.2526.50403632282824242020181816141212UNF 1 1/4UNF 1 3/8UNF 1 1/229.7533.0036.00121212RC (whitworth tapered pipe thread)Threa dimDrilldiapitchRC 1/8RC 1/4RC 3/8RC 1/2RC 3/4RC 18.4011.2014.7518.2523.7530.00281919141411G whitworth cylindrical pipe threadDrillDimDrilldiapitchG 1/8G 1/4G 3/8G 1/2G 5/8G 3/4G 7/8G 1G 1 1/4G 1 1/2G 1 3/4G 28.8011.8015.2519.0021.0024.5028.2530.7539.5045.5051.4057.20281919141414141111111111UNC (Unitfed coarse thread)ThreadDimDrilldiapitchUNC No 6UNC No 8UNC No 10UNCNo 12UNC 1/4UNC 5/16UNC 3/8UNC 7/16UNC 1/2UNC 9/16UNC 5/8UNC 3/4UNC 7/8UNC 1UNC 1 1/8 UNC 1 1/4UNC 1 3/8UNC 1 1/2UNC 1 3/4UNC 22.853.503.904.505.206.608.009.4010.7512.2513.5016.5019.5022.5025.0028.2531.0034.0039.5045.2532322424201816141312111098776654 1/2Pg steel conduit threadThreadDimDrilldiapitchPg7Pg9Pg11Pg13.5Pg1611.4014.0017.2519.0021.252018181818Pg21Pg29Pg3627.0035.545.5161616NPT American tapered pipe threadThreadDimDrilldiapitchNPT 1/16NPT 1/8NPT 1/4NPT 3/8NPT /2NPT 3/4NPT 1NPT 1 1/4NPT 1 1/2NPT 26.108.5011.0014.5017.8023.0029.0037.0044.0056.0027271818141411 1/211 1/211 1/211 1/2NPT American tapered pipe threadThreadDimDrilldiapitchNPT 1/16NPT 1/8NPT 1/4NPT 3/8NPT /2NPT 3/4NPT 1NPT 1 1