Table 1

Taper pipe threadPipe cylindrical threadWhitworth ISO 7-1, EN 10226 (DIN 2999, BSPT)The outer conical thread 1:16 Corner profile 55 Taper Pipe ThreadNPT, ASME B 1.20.1The outer conical thread 1:16 Corner profile 60 Whitworth ISO 228-1, DIN 259, BSPPThe outer cylindrical thread profile angle 55 Straight Pipe Thread for FixturesNPSM, ASME B 1.20.1The outer cylindrical thread profile angle 60 The value of the threadRBSPTExternal thread-DThreads per 1 inchThe value of the thread NPTExternal thread-DThreads per 1 inchThe value of the threadG BSPPExternal thread-DThreads per 1 inchThe value of the thread NPSMExternal thread-DThreads per 1 inchMay-167.72328May-167.93827May-167.7232810.083279.7282810.287279.7282813.3601813.1571913.7161813.1571916.8151816.6621917.1451816.6621920.9041420.9551421.3361420.9551426.2641426.4411426.6701426.44114132.84211.5133.24911133.40111.5133.249111 41.60511.51 41.910111 42.16411.51 41.910111 47.67611.51 47.803111 48.26011.51 47.80311259.71511.5259.61411260.32511.5259.614112 72.16182 75.184112 73.02582 75.18411388.0628387.88411388.9008387.884113 100.78784113.030113 101.60083 100.330114113.43684114.30084113.03011

Metricscrew threadAmerican and British screw threadThread forinsulating pipesMetrisches ISO-GewindeISO 261, DIN 13External thread profile angle 60 Unied Inch Screw ThreadUNC, ASME B 1.1External thread profile angle 60 British Standard Parallel Screw Thread of Whitworth Form B.S.W. BS 84(obsolete.): external thread profile angle 55 Stahlpanzerrohr-GewindeDIN 40 430The outer cylindrical thread profile angle 80 The value of the threadMExternal thread-DpitchThe value of the thread UNCExternal thread-DThreads per 1 inchThe value of the thread BSWExternal thread-DThreads per 1 inchThe value of the thread PgExternal thread-DThreads per 1 inch65.97416.322206.35020712.52087.9721.255/167.907185/167.93718915.218109.9681.59.491169.525161118.6181211.9661.757/1611.076147/1611.1121413.520.4181413.962212.6611312.700121622.5181615.96229/1614.2461215.87511228.3161817.9582.515.8341119.050102937162019.9582.519.0041022.22593647162221.9582.522.1769125.40084254162423.9523125.34981 28.57574859.3162726.95231 28.51971 31.75073029.9473.51 31.69471 38.10063332.9473.51 34.86461 44.45053635.94041 38.0396250.8004.53938.94041 44.38152 57.15044241.9374.5250.7264.52 63.50044544.9374.52 57.0764.52 69.8503.54847.92952 63.42145251.92952 69.76845655.9255.56059.9255.56463.92066867.92067271.9206Thread for insulating pipes EN 60423The outer cylindrical thread profile angle 60 The value of the threadMExternal thread-Dpitch615.9681.52019.9681.52524.9681.53231.9681.54039.9681.55049.9681.56362.9681.5