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OSG Threading Tap BSW A-Spiral Flute - Powder Metal Right Hand -TiCN Coated - Blind Holes DIN2184-1 - 5/16 x 18
| Size | 5/16 |
| Pitch | 18 |
| Overall Length | 90 |
| Threading Length | 14 |
| Reach | 35 |
| Shank Diameter | 8 |
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The OSG Threading Tap BSW A-Spiral Flute is a precision tool designed for cutting British Standard Whitworth threads in blind holes, delivering reliable performance for both professional shops and serious DIY projects.
- Thread type: British Standard Whitworth (BSW) right-handed threads in blind holes (DIN2184-1)
- A-Spiral flute design: Enhances chip evacuation in blind-hole operations to minimize resistance and binding
- Material: Powder metal substrate for improved durability and wear resistance
- Coating: TiCN (Titanium Carbonitride) reduces friction and extends tool life at higher speeds
- Size and pitch: 5/16" diameter with 18 threads per inch (5/16 x 18)
- Application: Optimized for blind holes, where through-holes aren’t possible
- Orientation: Right-hand tapping for standard clockwise threads
With the combination of a specialized flute geometry and TiCN coating, this tap delivers consistent, precise threads in challenging blind-hole scenarios. The TiCN coating minimizes wear and heat buildup, enabling cleaner cuts and longer tool life, even when tapping harder materials. The powder metal body provides robust toughness, helping to prevent premature breakage and maintain thread accuracy across multiple parts. This makes it an excellent choice for automotive, mechanical, and industrial assemblies that require dependable BSW threads in restricted-depth holes.
| Size | 5/16 |
| Pitch | 18 |
| Overall Length | 90 |
| Threading Length | 14 |
| Reach | 35 |
| Shank Diameter | 8 |
| Square | 6.2 |
| Flutes | 3 |
| DIN | 2184-1 |
| Thread Direction | Right Hand |
| Substrate | Powder Metal |
| Coating | TiCN |
| Style | Spiral Flute |
| Form | BSW |
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 A-Spiral Flute - Powder Metal Right Hand -TiCN Coated - Blind Holes
View full collection →You are viewing OSG-48139707. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Overall Length | Shank Diameter | Flutes | DIN | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| OSG-48139702 | 1/8 | 40 | 56 | 3.5 | 2 | 2184-1 | £35.93 | In Stock | |
| OSG-48139704 | 3/16 | 24 | 70 | 6 | 2 | 2184-1 | £37.53 | In Stock | |
| OSG-48139706 | 1/4 | 20 | 80 | 7 | 2 | 2184-1 | £38.33 | In Stock | |
| OSG-48139707 Viewing | 5/16 | 18 | 90 | 8 | 3 | 2184-1 | £44.46 | In Stock | |
| OSG-48139708 | 3/8 | 16 | 100 | 10 | 3 | 2184-1 | £52.70 | In Stock | |
| OSG-48139709 | 7/16 | 14 | 100 | 8 | 3 | 2184-1 | £57.10 | In Stock | |
| OSG-48139710 | 1/2 | 12 | 110 | 9 | 3 | 2184-1 | £71.73 | In Stock | |
| OSG-48139712 | 5/8 | 11 | 110 | 12 | 3 | 2184-1 | £93.61 | In Stock | |
| OSG-48139713 | 3/4 | 10 | 125 | 14 | 4 | 2184-1 | £131.65 | In Stock | |
| OSG-48139714 | 7/8 | 9 | 140 | 18 | 4 | 2184-1 | £165.05 | In Stock | |
| OSG-48139715 | 1 | 8 | 160 | 18 | 4 | 2184-1 | £231.89 | In Stock |
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