BSPP /JIS BSP. JIC & UNO. NPT. British Standard Pipe (Tapered). British Standard Pipe (Paralell). UNF Thread. National Pipe Thread. Dash. Size. Size. Thread.

THREAD DATA CHART INDEX = newly added item or revised item METRIC THREAD -- COARSE PITCH -- M METRIC THREAD -- FINE PITCH -- M (1 mm - 28 mm) METRIC THREAD -- FINE PITCH -- M (30 mm - 64 mm) METRIC THREAD -- FINE PITCH -- M (65 mm - 100 mm) PIPE THREAD -- BRITISH STANDARD PIPE PARALLEL -- BSPP/BSPF

NPT fittings will have threads with a 60 degree spread while BSP threads will have a 55 degree spread. A manual thread pitch gauge. Use this chart to easily compare NPT and BSP. How to Measure Threads Whether you're working with NPT or BSP fittings, you'll typically be able to tell the difference between tapered and straight connections.

POB 1778 Greer, SC 29652 414 West Poinsett Street Greer, SC 29650 [email protected] Ph: 864-848-3993 www.traskinst.com Fax: 864-848-9569 G-SERIES PIPE THREAD (BRITISH STANDARD PIPE PARALLEL

External Pipe Threads per. ISO 228-1, Pipe threads where pressure-tight joints are not made by the threads. These pipe threads are also known as Whitworth pipe threads. Where: D = Major Dia.internal thread D 1 = Minor Dia.internal thread D 2 = Pitch diameter internal thread d = Major Dia.external thread d 1 = Minor Dia.external thread

27 rows · British Standard Pipe BSP thread chart, BSP thread chart showing TPI and drill sizes.

Chart No 4 - British Standard Pipe Threads BSP Threads Dimensions in Inches except where stated Thread Form Data Tapping Drill Clearance Drill Diameter O/Diameter Core Pitch Depth Radius Effective Dia T.P.I Dec / Met / Frac Dec / Met / Frac

BSP parallel (BSPP) threads commonly seal via a 30° chamfer on the male thread to a Please refer to the BSPP and BSPT thread charts above for details.

NOTE: It is a common mistake to identify a BSPT (tapered) as an NPT. Remember that NPT threads have a 60° thread flank angle, and BSPT has a 55° angle (this can be verified with a thread gauge). Although BSP is a foreign thread, it isn't metric. This is why it comes in imperial sizes: 1/8, 1/4, 1/2, 3/4, and so on. Thread conforms to ISO 228-1.

Order on line BSPT Taps, Rc Series "Rc: Series British Standard Pipe - Taper- BSPT. Also referred to as British Standard Taper Pipe or Pipe Taper, or Conical Thread. Taper is 3/4" taper per foot ( 1 in 16 on the diameter) Various Symbols: BSPT, BSPTr, PT, KR, Rc.

Thread Designation Nominal Size Thread Form Type Major Diameter mm d=D Pitch mm p G1/8 1/8" BSPP 9.728 0.907 G1/4 1/4" BSPP 13.157 1.337 G3/8 3/8" BSPP 16.662 1.337