NPTThread Chart for basic dimensions of general purpose NPT pipe threads (inch) according to ANSI/ASME B1.20.1 standard. American National Standard Taper Pipe
Designationof thread Number of threads in 25.4 mm Pitch P Height of thread h major d = D pitch d2 = D2 minor d1 = D1 5 1/2" BSPP: 11: 2.309: 1.479: 151.13: 149.651: 148.172: 0: -0.434: 0: 0: 0.64 special Fasteners and Forgings that may require CNC machining to provide complex dimensional shape. CERTIFICATIONS. ISO 9001 Availablein tube sizes from 1/16 to 2 in. and 2 to 50 mm Straight Thread and NPT), 22 AN and AN Bulkhead Fitting, 23 10-32 Thread, M5 × 0.8 Thread, and Metric Dimensions, 14 Weld Connectors Tube Socket, 24 Male Pipe, 25 Female Connectors N PT, 26 ISO/BSP Tapered 7S196LX.