Guide includes diagrams and BSP thread chart. British Standard Pipe (BSP) is a family of technical standards for threads that has been 1/8 – 28, -02 

G/R/RP - Withworth thread (BSPP/BSPT) ; R 1/8, Rp 1/8, 9,728 ; R 1/4, Rp 1/4, 13,157 ; R 3/8, Rp 3/8, 16,662 ; R 1/2, Rp 1/2, 20,955 

Choose from our selection of 1"-8 nuts, including over 250 products in a wide range of styles and sizes. In stock and ready to ship. BROWSE CATALOG. Abrading & Polishing; Thread Size. Thread Size. 0000-160. 000-120. 00-90. 00-96. 0-80. 1-64. 1-72. 2-56. 2-64. 3-48. 3-56. 4-36. 4-40. 4-48. 5-40. 5-44. 6-32. 6-40. 8-32. 8-36. 10-24. 10-32. 12

02/02/  · When the diameter smaller than 1/4”, the value is indicated by a number, like #1 or No.1. 2.Thread sizes in metric are specified by diameter and pitch. The metric thread sizes are

British Association Threads Dimensions in Inches except where stated Thread Form Data Tapping Drill Clearance Drill Size O/Diameter Core Pitch Depth Radius Effective Dia T.P.I Dec / Met / Frac Dec / Met / Frac 1/8" 0.3830 0.3370 0.0357 0.0229 0.0049 0.3601 28 0.3445 - 8.75mm 0.3858 - 9.80mm 1/4" 0.5180 0.4510 0.0526 0.0335 0.0072 0.4845 19

Male Thd. d3, Thread Height H1, Tap Drill Diameter mm. G1/8, 1/8", BSPP, 9.728, 0.907, 28, 9.147 

G-threads have a parallel shape in accordance with the DIN-EN-ISO 228-1 standard with flank angle 55o. G/R/Rp - Whitworth Pipe Threads (BSPP/BSPT) · ISO 7-1 

Thread Dimensions Nominal Dimensions of Standard Threads ODM -- Outside Diameter of the Male IDF -- Inside Diameter of the TPI -- Threads per Inch GHT (3/4") -- 1.0625 ODM, 11

THREAD DIMENSIONS Nominal Dimensions of Standard Threads Pipe NH BSPP BSPTr O. D. NPT NPSH NPSM (NST) (Parallel) (Tapered) Size TPI TPI ODM IDF TPI ODM IDF TPI ODM IDF TPI ODM IDF TPI 1" 1.315 11.5 11.5 1.2951 1.1921 11.5 1.293 1. 1.375 1.2246 11 1.309 1.193 11 1 1/4" 1.660 11.5 11.5 1.6399 1.5369 11.5 1.638 1.546 1.650 1.534 11

There are two types of BSP Thread available. One is Parallel threads or we can say Straight threads. The second one is the Taper Thread. BSP is BRITISH STANDARD PIPE THREAD– Also known as Whitworth 55° Thread Form. BSPT is BRITISH STANDARD PIPE TAPER THREAD – Thread form per AS 1722.1, BS 21, ISO 7. BSPP is BRITISH STANDARD PIPE PARALLEL

Internal 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