Please log in here to access all benefits, including promotional discounts and faster checkouts.
OSG Threading Tap - NPT Spiral Point HSS-E - Steam Oxide Coated - Through Hole - 1 x 11.5
| Form | NPT |
| Size | 1 |
| Pitch | 11.5 |
| Flute Length | 1.3/4 |
| Shank Diameter | 1.125 |
| Overall Length | 3.3/4 |
Learn more about Klarna
The OSG NPT Spiral Point Threading Tap is a precision tool designed for fast, accurate through-hole threading of NPT pipes. Built for professionals who demand reliability and long tool life, it combines rugged materials with thoughtful engineering to deliver consistent results.
- Size: 1 x 11.5
- Type/Geometry: NPT Spiral Point Threading Tap for through-hole applications
- Material: HSS-E (high-speed steel with cobalt) for enhanced hardness and heat resistance
- Coating: Steam Oxide coating provides wear resistance and corrosion protection
- Chip Evacuation: Spiral point design facilitates rapid chip removal during tapping
- Application: Specifically engineered for through-hole NPT threading
With the combination of HSS-E cobalt and steam oxide coating, this tap resists heat buildup and maintains threading accuracy across longer runs. The spiral point geometry pushes chips forward, reducing recutting and improving throughput on through-hole work. This makes it ideal for producing reliable NPT threads on metal parts used in plumbing, hydraulic, and pneumatic assemblies. The tool’s durability translates to longer service life and fewer tool changes, helping shops meet demanding production schedules. For best results, use suitable cutting fluid and steady feeds to maintain crisp, concentric threads and extend tool life.
| Form | NPT |
| Size | 1 |
| Pitch | 11.5 |
| Flute Length | 1.3/4 |
| Shank Diameter | 1.125 |
| Overall Length | 3.3/4 |
| Substrate | HSS-E |
| Style | Spiral Point |
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 - NPT Spiral Point HSS-E - Steam Oxide Coated - Through Hole
View full collection →You are viewing OSG-22628814. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| OSG-22628764 | 1/8 | 27 | 0.75 | 0.318 | 2.1/8 | £69.52 | In Stock | |
| OSG-22628774 | 1/4 | 18 | 1.1/16 | 0.429 | 2.7/16 | £95.62 | In Stock | |
| OSG-22628784 | 3/8 | 18 | 1.1/16 | 5.542 | 3.3/16 | £112.98 | In Stock | |
| OSG-22628794 | 1/2 | 14 | 1.3/8 | 0.687 | 3.1/8 | £139.05 | In Stock | |
| OSG-22628804 | 3/4 | 14 | 1.3/8 | 0.906 | 3.1/4 | £201.63 | 1-2 days | |
| OSG-22628814 Viewing | 1 | 11.5 | 1.3/4 | 1.125 | 3.3/4 | £272.89 | 1-2 days |
No products match your filters.
