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OSG Threading Tap NPT A-Spiral Flute - Powder Metal Right Hand -TiCN Coated - Blind Holes DIN5156 - 1/8 x 27
| Size | 1/8 |
| Pitch | 27 |
| Overall Length | 90 |
| Threading Length | 19 |
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Description
Designed for precision threading in blind-hole applications, the OSG Threading Tap NPT A-Spiral Flute delivers reliable, high-quality 1/8-27 NPT threads with a right-hand orientation. Built for professional use, this tap combines rugged powder-metal construction with a hard TiCN coating to tackle demanding materials and tight tolerances.
- Thread size and type: 1/8-27 NPT, right-hand thread for standard NPT fittings in blind holes
- A-Spiral flute design: Optimized chip evacuation in blind-hole work to minimize clogging and re-cutting
- Material and coating: Powder-metal substrate paired with TiCN coating for superior wear resistance and reduced friction
- Application: Specifically engineered for blind-hole National Pipe Taper threading (NPT) in metal parts
- Standards: Compatible with DIN5156 specifications to support consistent tooling and threading results
This tap excels where clean, precise NPT threads are essential, such as hydraulic and pneumatic components, fluid ports, and lightweight housings. The TiCN coating lowers heat buildup and stretches tool life, while the powder-metal core provides toughness and durability in tough materials. The spiral flute design helps maintain steady cutting action, reducing the risk of chatter and ensuring stable performance even in challenging alloys. Whether you’re retrofitting an old assembly or fabricating new parts, this tap delivers dependable threading with fewer interruptions.
Part Numbers
- Protool Part Number
- OSG-48331600
- 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 NPT A-Spiral Flute - Powder Metal Right Hand -TiCN Coated - Blind Holes
View full collection →You are viewing OSG-48331600. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Overall Length | Shank Diameter | Flutes | DIN | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| OSG-48331500 | 1/16 | 27 | 90 | 6 | 3 | 5156 | £129.17 | 1-2 days | |
| OSG-48331600 Viewing | 1/8 | 27 | 90 | 7 | 3 | 5156 | £103.37 | In Stock | |
| OSG-48331700 | 1/4 | 18 | 100 | 11 | 3 | 5156 | £124.30 | In Stock | |
| OSG-48331800 | 3/8 | 18 | 110 | 12 | 4 | 5156 | £170.44 | 1-2 days | |
| OSG-48331900 | 1/2 | 14 | 125 | 16 | 4 | 5156 | £212.81 | In Stock | |
| OSG-48331000 | 3/4 | 14 | 140 | 20 | 4 | 5156 | £337.00 | 1-2 days | |
| OSG-48331100 | 1 | 11.5 | 160 | 25 | 4 | 5156 | £478.28 | 1-2 days |
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