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OSG Threading Tap - BSW Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole - 7/8 x 9
| Form | BSW |
| Size | 7/8 |
| Pitch | 9 |
| Flute Length | 38 |
| Shank Diameter | 16 |
| Overall Length | 118 |
Learn more about Klarna
The OSG BSW Spiral Flute Threading Tap is built for precision internal threading in blind holes, delivering reliable, long-lasting performance for professional machinists.
- Size and thread format: 7/8" diameter, 9 TPI BSW thread for standard blind-hole applications.
- Material and grade: HSS-E (high-speed steel with cobalt) for enhanced wear resistance and heat tolerance.
- Coating: Steam oxide coating to improve durability and provide smoother cutting in demanding materials.
- Flute design: Spiral flute geometry supports efficient chip evacuation, reducing clogging in confined blind holes.
- Shank type: Straight shank for compatibility with common taps, chucks, and tapping setups.
- Applications: Optimized for accurate, consistent threading in blind-hole metalwork, with extended tool life in tough materials.
Designed to meet the rigors of critical machining tasks, this tap helps you produce clean, precise threads with less rework. The cobalt-enhanced HSS core stands up to higher cutting temperatures, while the steam oxide coating guards against wear and corrosion. Spiral flutes actively evacuate chips from blind holes, improving throughput and lowering the risk of tap binding or breakage.
| Form | BSW |
| Size | 7/8 |
| Pitch | 9 |
| Flute Length | 38 |
| Shank Diameter | 16 |
| Overall Length | 118 |
| Substrate | HSS-E |
| Style | Spiral Flute |
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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 - BSW Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole
View full collection →You are viewing OSG-22207144. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| OSG-22207024 | 1/8 | 40 | 11 | 3.15 | 48 | £46.05 | 1-2 days | |
| OSG-22207034 | 5/32 | 32 | 13 | 4 | 53 | £55.62 | 1-2 days | |
| OSG-22207044 | 3/16 | 24 | 16 | 5 | 58 | £27.80 | In Stock | |
| OSG-22207054 | 7/32 | 24 | 17 | 5.6 | 62 | £38.67 | 1-2 days | |
| OSG-22207064 | 1/4 | 20 | 19 | 6.3 | 66 | £24.23 | In Stock | |
| OSG-22207544 | 9/32 | 20 | 22 | 8 | 72 | £53.01 | 1-2 days | |
| OSG-22207074 | 5/16 | 18 | 24 | 10 | 80 | £26.94 | In Stock | |
| OSG-22207084 | 3/8 | 16 | 25 | 8 | 85 | £33.18 | In Stock | |
| OSG-22207094 | 7/16 | 14 | 29 | 9 | 89 | £46.91 | In Stock | |
| OSG-22207104 | 1/2 | 12 | 30 | 11.2 | 95 | £47.36 | In Stock | |
| OSG-22207114 | 9/16 | 12 | 32 | 12.5 | 102 | £62.59 | 1-2 days | |
| OSG-22207124 | 5/8 | 11 | 37 | 14 | 112 | £71.26 | In Stock | |
| OSG-22207134 | 3/4 | 10 | 37 | 14 | 112 | £106.89 | In Stock | |
| OSG-22207144 Viewing | 7/8 | 9 | 38 | 16 | 118 | £147.77 | In Stock | |
| OSG-22207154 | 1 | 8 | 45 | 18 | 130 | £175.57 | 1-2 days | |
| OSG-22207164 | 1.1/8 | 7 | 37 | 20 | 127 | £305.92 | 1-2 days | |
| OSG-22207174 | 1.1/4 | 7 | 37 | 22 | 137 | £389.36 | In Stock |
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