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OSG Threading Tap - BSW Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole - 1/8 x 40
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Description
Designed for precision blind-hole threading, the OSG BSW Spiral Flute Threading Tap in 1/8 x 40 delivers clean, accurate Whitworth threads with reliability you can count on. Crafted from HSS‑E (high-speed steel with cobalt) and finished with a durable Steam Oxide coating, it’s built to resist heat and wear in demanding machining environments.
- Thread Type: BSW (Whitworth) in 1/8" diameter with 40 TPI, optimized for blind-hole applications
- Material: HSS‑E (cobalt-enhanced high-speed steel) for improved hardness and heat resistance
- Coating: Steam Oxide finish to boost wear resistance and tool life in tough metals
- Flute Design: Spiral flute geometry for efficient chip evacuation, reducing binding in deep or blind holes
- Application: Specifically suited for precision tapping of blind holes in steel and alloys, delivering consistent thread quality
With its robust HSS‑E core and steam-oxide finish, this tap maintains cutting performance under higher temperatures and heavier feeds. The spiral flute geometry aids chip clearance, minimizes torque, and lowers the risk of tap breakage when working in confined blind-hole environments. Ideal for production runs or shop tasks where reliable, accurately threaded components are essential.
Part Numbers
- Protool Part Number
- OSG-22207024
- Brand
- OSG
- Category
- Threading Tap
Delivery
Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.
Returns
14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.
Technical Support
Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.
Trade Accounts
Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.
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 - BSW Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole
View full collection →You are viewing OSG-22207024. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| OSG-22207024 Viewing | 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 | 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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