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OSG Threading Tap Metric A- Spiral Flute - HB Weldon Powder Metal Right Hand - TiCN Coated - Blind Holes DIN371/1835 - M8 x 1.25
| Size | M8 |
| Pitch | 1.25 |
| Overall Length | 90 |
| Threading Length | 10 |
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Description
The OSG Threading Tap is a metric A-Spiral flute tap designed for precise threading of blind holes. Built for professional machinists and high-demand shops, it combines a TiCN-coated, powder-metal body with a stable HB Weldon shank for reliable performance on M8 x 1.25 threads (DIN371/1835).
- Size / Thread: M8 x 1.25, metric thread per DIN371/1835
- Flute Design: A-Spiral flute optimizes chip evacuation in blind holes for smoother tapping
- Material: Powder-metal construction delivers strong wear resistance and durability in repeated use
- Coating: TiCN coating provides a harder contacting surface, reduces friction, and extends tool life
- Shank: HB Weldon shank ensures stable drive and accurate alignment in holders
- Direction: Right-hand threading suitable for clockwise operation
- Application: Specifically engineered for metric blind-hole tapping in metalworking applications
The combination of A-Spiral geometry, TiCN coating, and powder-metal construction translates to cleaner threads, fewer re-tap jobs, and longer tool life in production environments. The spiral flute reduces chip buildup in deep blind holes, while the Weldon shank maintains precise alignment for consistent hole quality. Ideal for machine shops, contract manufacturers, and automotive or aerospace assembly lines where reliable, high-precision blind-hole threads are required. For best results, use proper cutting fluid, adhere to recommended speeds, and ensure correct pre-drill sizes to maximize performance and tool life.
Part Numbers
- Protool Part Number
- OSG-48220161
- 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 Metric A- Spiral Flute - HB Weldon Powder Metal Right Hand - TiCN Coated - Blind Holes
View full collection →You are viewing OSG-48220161. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Overall Length | Shank Diameter | Flutes | DIN | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| OSG-48220138 | M3 | 0.5 | 56 | 6 | 3 | 371/1835 | £37.73 | In Stock | |
| OSG-48220144 | M4 | 0.7 | 63 | 6 | 3 | 371/1835 | £38.81 | In Stock | |
| OSG-48220149 | M5 | 0.8 | 70 | 6 | 3 | 371/1835 | £39.99 | In Stock | |
| OSG-48220155 | M6 | 1 | 80 | 6 | 3 | 371/1835 | £40.42 | In Stock | |
| OSG-48220161 Viewing | M8 | 1.25 | 90 | 8 | 3 | 371/1835 | £48.33 | In Stock | |
| OSG-48220169 | M10 | 1.5 | 100 | 10 | 3 | 371/1835 | £59.01 | In Stock | |
| OSG-48220179 | M12 | 1.75 | 110 | 12 | 3 | 371/1835 | £74.41 | In Stock | |
| OSG-48220191 | M14 | 2 | 110 | 14 | 3 | 371/1835 | £88.67 | In Stock | |
| OSG-48220202 | M16 | 2 | 110 | 16 | 3 | 371/1835 | £104.23 | In Stock |
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