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.
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.