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British Standard Brass Threads

British Brass Thread is an imperial unit based screw thread.

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British Brass Thread is an imperial unit based screw thread that adopts the Whitworth thread form with pitch 26 TPI and a thread angle of 55 degrees for all diameters.

Size	Outside Diameter (inches)	Core Diameter (inches)	Depth	TPI
1/8"	0.125	0.0757	0.0246	26
1/4"	0.250	0.2007	0.0246	26
3/8"	0.375	0.3257	0.0246	26
1/2"	0.500	0.4507	0.0246	26
5/8"	0.625	0.5657	0.0246	26
3/4"	0.750	0.7007	0.0246	26
7/8"	0.875	0.8257	0.0246	26
1"	1.000	0.9507	0.0246	26
1-1/8"	1.125	1.0757	0.0246	26
1-1/4"	1.250	1.2007	0.0246	26
1-1/2"	1.500	1.4507	0.0246	26

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Related Topics

Threads - Thread data - metric, unified, ACME and others.

Related Documents

ANSI B1.20.1 - NPS - American National Standard Straight Pipe Threads - NPS pressure tight straight pipe threads with lubricant or sealer.
ANSI B1.20.1 - NPT - American National Standard Taper Pipe Threads - NPT and NPTF pipe threads - dimensions according ANSI/ASME B1.20.1/3.
ASTM B43 - Seamless Red Brass Pipes - Dimensions - Standard sizes specification for seamless red brass pipes.
British Standard Cycle Thread - British Standard Cycle is a British Imperial screw thread standard.
ISO 228 - Pipe Threads where Pressure Tight Joints are not made on the Threads - Requirements for thread form, dimensions, tolerances and designation for fastening pipe threads, thread sizes.
ISO 7 - Pipe Threads where Pressure-tight Joints are made on the Threads - Pressure-tight joints made on the pipe threads.
Standards Applied for Piping Threads - Applied threaded standards used for piping connections.
Threads commonly used in Piping - Piping thread standards.
Whitworth Pipe Threads - BSPP (G) - British Standard Pipe Parallel and BSPT (R/Rp) – British Standard Tapered Pipe for pipes and tapered threads - G/R/Rp.
Withworth Threads - Taps and Drill Sizes - Taps and drill sizes used for Whitworth - ISO 7 and ISO 228 threads.

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