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OSG Threading Tap - BSF Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole - 1.1/8 x 9
| Form | BSF |
| Size | 1.1/8 |
| Pitch | 9 |
| Flute Length | 37 |
| Shank Diameter | 20 |
| Overall Length | 127 |
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The OSG BSF Spiral Flute Threading Tap is engineered for precision blind-hole tapping, delivering consistent British Standard Fine threads with durable lifespan. Built for professional machinists and shop floors, it combines cobalt-enriched HSS with a steam oxide coating to deliver reliable performance in demanding metals.
- Thread form: BSF (British Standard Fine) spiral-flute threading tap designed for blind-hole applications, size 1-1/8" diameter with 9 TPI
- Material and coating: HSS‑E cobalt alloy for superior hardness and heat resistance; Steam Oxide coating provides lubrication and corrosion protection to extend tool life
- Flute geometry: Spiral flute enables efficient chip evacuation, reducing clogging and improving thread quality in confined holes
- Ideal use: Specifically optimized for blind holes in metalworking, fixtures, and automotive components where access is limited
- Durability: Built to withstand high-temperature tapping with consistent performance across production runs
When you need reliable, accurate threads in hard-to-reach spaces, this tap delivers. The spiral-flute design, cobalt-grade steel, and steam oxide coating work together to produce clean threads with less back-turn, resist wear, and extend tool life. Use it for precision fastener assemblies, quick repairs in machinery, or routine maintenance tasks in metal fabrication. For best results, maintain proper lubrication and steady feed pressure to minimize tool wear and maximize finish quality.
| Form | BSF |
| Size | 1.1/8 |
| Pitch | 9 |
| Flute Length | 37 |
| Shank Diameter | 20 |
| Overall Length | 127 |
| Substrate | HSS-E |
| Style | Spiral Flute |
What time are Protool open?
We are open Monday to Friday between 8:30am and 5pm.
Do you offer Free Next Day delivery?
Yes! We offer Free Next Day delivery via Royal Mail Tracked 24 on all orders over £50 ex VAT*. We also offer Free DPD Local Next Day delivery on all orders over £100 ex VAT*.
We also offer the following:
- Royal Mail Tracked 24 — £5.90 (FREE on orders over £50 ex VAT*). Order before 4:30pm for next day delivery. No signature required.
- DPD Local Next Day — £8.00 (FREE on orders over £100 ex VAT*). Standard next day delivery to UK mainland addresses.
- Royal Mail Special Delivery — £12.50. Guaranteed delivery before 1pm the next working day.
- DPD Saturday Delivery — £25.00. Must be ordered on Friday before 4pm. Pre-12pm delivery.
For delivery to Scottish Highlands & Islands, Northern Ireland, Republic of Ireland, or overseas locations, additional charges apply. Please see our delivery page for full details, or call us on 01732 887 334.
*T's & C's and exclusions apply. Please see our delivery page for more information on all our services.
Full Range: OSG Threading Taps - BSF Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole
View full collection →You are viewing OSG-22207434. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| OSG-22207554 | 3/16 | 32 | 16 | 5 | 58 | £27.80 | In Stock | |
| OSG-22207564 | 7/32 | 28 | 17 | 5.6 | 62 | £39.10 | 1-2 days | |
| OSG-22207314 | 1/4 | 26 | 19 | 6.3 | 66 | £23.75 | In Stock | |
| OSG-22207324 | 5/16 | 22 | 22 | 8 | 72 | £26.94 | In Stock | |
| OSG-22207334 | 3/8 | 20 | 24 | 10 | 80 | £33.18 | In Stock | |
| OSG-22207344 | 7/16 | 18 | 25 | 8 | 85 | £46.91 | In Stock | |
| OSG-22207354 | 1/2 | 16 | 29 | 9 | 89 | £47.36 | In Stock | |
| OSG-22207364 | 9/16 | 16 | 30 | 11.2 | 95 | £62.59 | 1-2 days | |
| OSG-22207374 | 5/8 | 14 | 32 | 12.5 | 102 | £71.26 | In Stock | |
| OSG-22207394 | 3/4 | 12 | 37 | 14 | 112 | £106.89 | In Stock | |
| OSG-22207414 | 7/8 | 11 | 38 | 16 | 118 | £147.77 | 1-2 days | |
| OSG-22207424 | 1 | 10 | 45 | 18 | 130 | £175.57 | 1-2 days | |
| OSG-22207434 Viewing | 1.1/8 | 9 | 37 | 20 | 127 | £305.92 | 1-2 days | |
| OSG-22207444 | 1.1/4 | 9 | 37 | 22 | 137 | £389.36 | 1-2 days |
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