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OSG Threading Tap - BA Spiral Point HSS-E - Steam Oxide Coated Plus - Through Hole - 4BA
| Form | BA |
| Size | 4BA |
| Flute Length | 13 |
| Shank Diameter | 4.5 |
| Overall Length | 53 |
| Substrate | HSS-E |
Learn more about Klarna
Introducing the OSG BA Spiral Point Threading Tap in 4BA — a precision tool built for through-hole BA threading. Designed for machinists and precision assemblies, it delivers consistent, high-quality threads with reliable longevity.
- Thread form: BA spiral point threading tap for British Association thread standards, optimized for through-hole applications.
- Size: 4BA, a compact, common BA size ideal for small-diameter fasteners and delicate assemblies.
- Material: HSS-E (high-speed steel with cobalt) for enhanced hardness and wear resistance under demanding cutting conditions.
- Coating: Steam Oxide Coated Plus finish to improve heat tolerance and abrasion resistance during prolonged use.
- Cutting geometry: Spiral point design promotes efficient chip evacuation, reducing clogging and helping to prevent thread distortion.
- Application: Specifically engineered for through-hole BA threads, providing precise alignment and clean, repeatable results.
This tap combines cobalt-enriched HSS with a durable Steam Oxide Coated Plus finish to maintain cutting performance as temperatures rise, extending tool life on tough materials. The spiral point geometry pushes chips ahead of the cutting edge, enabling smoother operation and faster cycle times in through-hole work. Ideal for small-scale projects, instrument housings, electronics enclosures, and any application requiring reliable BA threads with tight tolerances.
| Form | BA |
| Size | 4BA |
| Flute Length | 13 |
| Shank Diameter | 4.5 |
| Overall Length | 53 |
| 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 - BA Spiral Point HSS-E - Steam Oxide Coated Plus - Through Hole
View full collection →You are viewing OSG-23109140. Click any other SKU to view its full details.
| Product SKU | Size | Flute Length | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|
| OSG-23109120 | 2BA | 16 | 5 | 58 | £32.15 | In Stock | |
| OSG-23109140 Viewing | 4BA | 13 | 4.5 | 53 | £32.15 | 1-2 days | |
| OSG-23109160 | 6BA | 9.5 | 2.8 | 44.5 | £36.49 | 1-2 days |
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