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OSG Threading Tap - BA Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole - 7BA
| Form | BA |
| Size | 7BA |
| Flute Length | 9.5 |
| Shank Diameter | 2.8 |
| Overall Length | 44.5 |
| Substrate | HSS-E |
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The OSG BA Spiral Flute Threading Tap is a precision tool designed for 7BA blind-hole threading, built for machinists who demand reliable, repeatable results in tight or hard-to-reach bores.
- Thread Size: 7BA (British Association) for fine-pitch threading in blind holes.
- Flute Design: Spiral flute optimized for efficient chip evacuation in blind-hole applications.
- Material: HSS-E (high-speed steel with cobalt) for enhanced hardness and heat resistance.
- Coating: Steam oxide finish to reduce friction and extend tool life in demanding cuts.
- Application: Ideal for precise threading in thin-walled or tightly access-restricted components.
- Brand: OSG, a trusted name in high-performance threading tools.
This tapping solution delivers consistent, high-quality threads while maintaining edge sharpness under higher cutting temperatures. The cobalt-enhanced HSS and steam oxide coating work together to improve durability and heat resistance, helping you achieve clean threads in challenging blind-hole workpieces. Use with appropriate lubrication and a compatible tap wrench to maximize performance in precision assemblies, instrument housings, or aerospace-grade components that require reliable 7BA threads.
| Form | BA |
| Size | 7BA |
| Flute Length | 9.5 |
| Shank Diameter | 2.8 |
| Overall Length | 44.5 |
| 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 - BA Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole
View full collection →You are viewing OSG-22209170. Click any other SKU to view its full details.
| Product SKU | Size | Flute Length | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|
| OSG-22209100 | 0BA | 19 | 6.3 | 66 | £21.71 | In Stock | |
| OSG-22209110 | 1BA | 17 | 5.6 | 62 | £31.71 | In Stock | |
| OSG-22209120 | 2BA | 16 | 5 | 58 | £20.41 | In Stock | |
| OSG-22209130 | 3BA | 13 | 4.5 | 53 | £31.71 | In Stock | |
| OSG-22209140 | 4BA | 13 | 3.55 | 50 | £20.41 | In Stock | |
| OSG-22209150 | 5BA | 11 | 3.15 | 48 | £31.71 | In Stock | |
| OSG-22209160 | 6BA | 9.5 | 2.8 | 44.5 | £23.03 | In Stock | |
| OSG-22209170 Viewing | 7BA | 9.5 | 2.8 | 44.5 | £51.26 | 1-2 days | |
| OSG-22209180 | 8BA | 9.5 | 2.8 | 44.5 | £34.78 | In Stock | |
| OSG-22209190 | 9BA | 8 | 2.5 | 41 | £96.45 | 1-2 days | |
| OSG-22209200 | 10BA | 8 | 2.5 | 41 | £71.26 | In Stock |
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