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OSG Threading Tap UNF A-Spiral Point - Powder Metal Right Hand -TiCN Coated - Through Holes DIN2184-1 - No.4 x 40
| Size | No.4 |
| Pitch | 40 |
| Overall Length | 56 |
| Threading Length | 11 |
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Description
The OSG Threading Tap UNF A-Spiral Point is a precision through-hole tap designed for Unified National Fine threads. Built for high-performance machining, this right-hand tap combines a TiCN-coated, powder-metal body with an A-Spiral Point geometry to deliver clean, accurate threads in demanding applications.
- Thread type and size: UNF threading for through-holes, DIN2184-1 compatibility, No.4 x 40 size.
- A-Spiral Point geometry: Efficient chip evacuation that pushes chips ahead of the cutting edge for through-hole tapping.
- Material: Powder-metal substrate for enhanced wear resistance and toughness under heavy cutting.
- Coating: TiCN coating reduces friction, improves heat resistance, and extends tool life.
- Orientation: Right-hand cut designed for standard assembly threads and conventional tapping procedures.
- Application focus: Specifically optimized for through-hole tapping in a variety of metals and alloys, delivering consistent thread quality.
This tap supports reliable, repeatable results in production runs and precision work alike. The combination of powder-metal durability, low-friction TiCN coating, and the A-Spiral Point geometry helps maintain thread accuracy, minimize burrs, and improve overall productivity in UNF through-hole projects.
Part Numbers
- Protool Part Number
- OSG-48145458
- 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 UNF A-Spiral Point - Powder Metal Right Hand -TiCN Coated - Through Holes
View full collection →You are viewing OSG-48145458. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Overall Length | Shank Diameter | Flutes | DIN | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| OSG-48145454 | No.2 | 56 | 45 | 2.8 | 2 | 2184-1 | £46.59 | In Stock | |
| OSG-48145456 | No.3 | 48 | 50 | 2.8 | 2 | 2184-1 | £46.46 | In Stock | |
| OSG-48145458 Viewing | No.4 | 40 | 56 | 3.5 | 2 | 2184-1 | £40.72 | In Stock | |
| OSG-48145460 | No.5 | 40 | 56 | 3.5 | 3 | 2184-1 | £40.72 | In Stock | |
| OSG-48145462 | No.6 | 32 | 56 | 4 | 3 | 2184-1 | £46.47 | In Stock | |
| OSG-48145465 | No.8 | 32 | 63 | 4.5 | 3 | 2184-1 | £38.59 | In Stock | |
| OSG-48145467 | No.10 | 24 | 70 | 6 | 3 | 2184-1 | £47.30 | In Stock | |
| OSG-48145469 | No.12 | 24 | 80 | 6 | 3 | 2184-1 | £42.86 | In Stock | |
| OSG-48145472 | 1/4 | 20 | 80 | 7 | 3 | 2184-1 | £51.41 | In Stock | |
| OSG-48145476 | 5/16 | 18 | 90 | 8 | 3 | 2184-1 | £54.97 | In Stock | |
| OSG-48145481 | 3/8 | 16 | 90 | 10 | 3 | 2184-1 | £59.51 | In Stock | |
| OSG-48145486 | 7/16 | 14 | 100 | 8 | 3 | 2184-1 | £74.99 | In Stock | |
| OSG-48145491 | 1/2 | 13 | 100 | 9 | 3 | 2184-1 | £71.16 | In Stock | |
| OSG-48145496 | 9/16 | 12 | 100 | 11 | 3 | 2184-1 | £84.15 | In Stock | |
| OSG-48145504 | 5/8 | 11 | 100 | 12 | 3 | 2184-1 | £97.33 | In Stock | |
| OSG-48145517 | 3/4 | 10 | 110 | 14 | 3 | 2184-1 | £125.20 | In Stock | |
| OSG-48145528 | 7/8 | 9 | 125 | 18 | 3 | 2184-1 | £158.36 | In Stock | |
| OSG-48145539 | 1 | 8 | 140 | 18 | 3 | 2184-1 | £210.05 | In Stock |
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