HSS Hand Tap Set - BSW Thread
- • Material: HSS
- • Grade: M-2
- • Thread Type: BSW (British Standard Whitworth)
- • Standard Compliance: BS 84
Cut reliable British Standard Whitworth (BSW) internal threads with our HSS Hand Tap Set, purpose-built for coarse-pitch imperial threading in general engineering and heavy machinery applications. Manufactured to BS 84 standards with the signature 55-degree thread angle, these taps are ideal for repairing and creating threads on older British equipment, marine engines, and industrial machinery. Stocked in Dubai for quick delivery to workshops and engineering firms across the UAE.
BSW Thread - Specifications
| Thread Size | TPI | Pitch (in) |
|---|---|---|
| BSW 1/8" | 40 | 0.025 |
| BSW 3/16" | 24 | 0.042 |
| BSW 1/4" | 20 | 0.050 |
| BSW 5/16" | 18 | 0.056 |
| BSW 3/8" | 16 | 0.063 |
| BSW 7/16" | 14 | 0.071 |
| BSW 1/2" | 12 | 0.083 |
| BSW 9/16" | 12 | 0.083 |
| BSW 5/8" | 11 | 0.091 |
| BSW 3/4" | 10 | 0.100 |
| BSW 7/8" | 9 | 0.111 |
| BSW 1" | 8 | 0.125 |
| BSW 1-1/8" | 7 | 0.143 |
| BSW 1-1/4" | 7 | 0.143 |
| BSW 1-3/8" | 6 | 0.167 |
| BSW 1-1/2" | 6 | 0.167 |
| BSW 1-5/8" | 5 | 0.200 |
| BSW 1-3/4" | 5 | 0.200 |
| BSW 1-7/8" | 4.5 | 0.222 |
| BSW 2" | 4.5 | 0.222 |
| BSW 2-1/4" | 4 | 0.250 |
| BSW 2-1/2" | 4 | 0.250 |
| BSW 2-3/4" | 3.5 | 0.286 |
| BSW 3" | 3.5 | 0.286 |
| BSW 3-1/4" | 3.25 | 0.308 |
| BSW 3-1/2" | 3.25 | 0.308 |
| BSW 3-3/4" | 3 | 0.333 |
| BSW 4" | 3 | 0.333 |
BSW (British Standard Whitworth) Hand Tap Sets for Imperial Engineering
British Standard Whitworth (BSW) thread, invented by Sir Joseph Whitworth in 1841, was the world's first standardized screw thread system and remains in widespread use across UK-origin machinery, marine engines, and heavy industrial equipment. Our HSS hand tap sets in BSW thread are precision-ground to BS 84 standards, featuring the characteristic 55-degree thread angle and coarse pitch that delivers excellent strength in ductile materials.
BSW taps are indispensable for maintaining legacy British equipment, steam systems, railway components, and vintage machinery still operating across the Middle East. The coarse thread form provides superior resistance to stripping in softer materials and allows for faster tapping operations. Engineering workshops in Dubai and throughout the UAE keep BSW tap sets on hand for restoration, repair, and custom fabrication projects where imperial threading is specified.
Need finer imperial threads? Explore our UNF Hand Tap Sets for unified fine-pitch threading applications.
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