British Standard Brass Threads
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 |
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 Threads
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.
Piping Thread Standards
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.