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OSG Threading Tap - UNC Spiral Point HSS-E - Steam Oxide Coated - Through Hole - 3/8 x 16
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Description
Engineered for precision through-hole threading, the OSG UNC Spiral Point Threading Tap delivers reliable 3/8-16 UNC threads with outstanding durability. Crafted for demanding machining tasks, this tap combines high‑speed steel with cobalt (HSS‑E) and a tough Steam Oxide finish to resist wear and heat.
- Thread size: UNC 3/8-16 through-hole threading tap for reliable, standard-spec threads
- Material: HSS‑E (high-speed steel with cobalt) for enhanced hardness and heat resistance
- Coating: Steam oxide coating to improve wear resistance and lubricity during tapping
- Flute design: Spiral Point geometry to efficiently evacuate chips in through-hole applications
- Application: Ideal for through-hole tapping in metalworking environments where consistent thread quality matters
- Technology: Builds on OSG’s advanced threading technology for precise thread formation and extended tool life
This tap helps you achieve clean, accurate threads with reduced risk of built-up chips and premature wear. The spiral point pushes chips out of the hole, streamlining production and minimizing tapping downtime. With HSS‑E’s superior heat tolerance and the Steam Oxide coating, you’ll experience dependable performance even under tougher cutting conditions. Ideal for shops and production environments that require repeatable results, long tool life, and dependable through-hole threading.
Part Numbers
- Protool Part Number
- OSG-23104794
- 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 - UNC Spiral Point HSS-E - Steam Oxide Coated - Through Hole
View full collection →You are viewing OSG-23104794. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| OSG-23104574 | No. 4 | 40 | 11 | 3.15 | 48 | £62.06 | 1-2 days | |
| OSG-23104594 | No. 5 | 40 | 11 | 3.15 | 48 | £62.06 | 1-2 days | |
| OSG-23104614 | No. 6 | 32 | 13 | 3.55 | 50 | £37.89 | In Stock | |
| OSG-23104644 | No. 8 | 32 | 13 | 4.5 | 53 | £37.89 | In Stock | |
| OSG-23104664 | No. 10 | 24 | 16 | 5 | 58 | £37.89 | 1-2 days | |
| OSG-23104714 | 1/4 | 20 | 19 | 6.3 | 66 | £31.62 | In Stock | |
| OSG-23104744 | 5/16 | 18 | 22 | 8 | 72 | £35.80 | In Stock | |
| OSG-23104794 Viewing | 3/8 | 16 | 24 | 10 | 80 | £45.19 | In Stock | |
| OSG-23104894 | 1/2 | 13 | 29 | 9 | 89 | £65.34 | 1-2 days |
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