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OSG Threading Tap - UNF Spiral Point HSS-E - Steam Oxide Coated - Through Hole - 5/8 x 18
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Description
OSG UNF Spiral Point Threading Tap, 5/8 x 18 UNF, is engineered for precise through-hole tapping with durability you can trust. Crafted from HSS-E (high-speed steel with cobalt) and finished with a Steam Oxide coating, it’s built to handle demanding machining tasks while delivering clean, accurate threads.
- Thread size and standard: 5/8-18 UNF threading for through-hole applications, designed to meet exacting thread requirements.
- Material: HSS-E (high-speed steel with cobalt) for enhanced hardness and heat resistance during heavy use.
- Coating: Steam Oxide finish to improve wear resistance and extend tool life in tough machining environments.
- Cutting geometry: Spiral Point design that efficiently evacuates chips and pushes them out of the hole, reducing clogging and rework.
- Application: Specifically optimized for through-hole tapping to produce consistent, high-quality threads in a single pass.
- Brand and lineage: Part of OSG’s HY-PRO line of premium spiral-point taps, trusted for precision threading in professional shops.
This combination of a cobalt-enhanced alloy, steam oxide coating, and a spiral-point geometry translates to more reliable thread formation, fewer interruptions for chip clearing, and longer tool life. Whether you’re finishing a critical through-hole component or performing high-cycle production tapping, this tap helps you achieve repeatable, accurate threads with minimal downtime.
Part Numbers
- Protool Part Number
- OSG-22105044
- 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 - UNF Spiral Point HSS-E - Steam Oxide Coated - Through Hole
View full collection →You are viewing OSG-22105044. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| OSG-22104504 | No. 0 | 80 | 8 | 2.5 | 40 | £126.88 | In Stock | |
| OSG-22104524 | No. 1 | 72 | 8 | 2.5 | 41 | £71.26 | In Stock | |
| OSG-22104544 | No. 2 | 64 | 9.5 | 2.8 | 44.5 | £50.39 | In Stock | |
| OSG-22104564 | No. 3 | 56 | 9.5 | 2.8 | 44.5 | £50.39 | In Stock | |
| OSG-22104584 | No. 4 | 48 | 11 | 3.15 | 48 | £31.02 | In Stock | |
| OSG-22104604 | No. 5 | 44 | 11 | 3.15 | 48 | £31.02 | In Stock | |
| OSG-22104624 | No. 6 | 40 | 13 | 3.55 | 50 | £18.94 | In Stock | |
| OSG-22104654 | No. 8 | 36 | 13 | 4.5 | 53 | £18.94 | 1-2 days | |
| OSG-22104674 | No. 10 | 32 | 16 | 5 | 58 | £18.94 | In Stock | |
| OSG-22104694 | No. 12 | 28 | 17 | 5.6 | 62 | £22.59 | In Stock | |
| OSG-22104724 | 1/4 | 28 | 19 | 6.3 | 66 | £15.81 | In Stock | |
| OSG-22104764 | 5/16 | 24 | 22 | 8 | 72 | £17.88 | In Stock | |
| OSG-22104814 | 3/8 | 24 | 24 | 10 | 80 | £22.59 | In Stock | |
| OSG-22104864 | 7/16 | 20 | 25 | 8 | 85 | £32.50 | In Stock | |
| OSG-22104914 | 1/2 | 20 | 29 | 9 | 89 | £32.66 | In Stock | |
| OSG-22104964 | 9/16 | 18 | 30 | 11.2 | 95 | £41.36 | In Stock | |
| OSG-22105044 Viewing | 5/8 | 18 | 32 | 12.5 | 102 | £48.49 | In Stock | |
| OSG-22105174 | 3/4 | 16 | 37 | 14 | 112 | £72.75 | In Stock | |
| OSG-22105284 | 7/8 | 14 | 38 | 16 | 118 | £100.83 | In Stock | |
| OSG-22105394 | 1 | 12 | 45 | 18 | 130 | £120.78 | 1-2 days | |
| OSG-22105534 | 1.1/8 | 12 | 37 | 20 | 127 | £208.59 | 1-2 days | |
| OSG-22105664 | 1.1/4 | 12 | 37 | 22 | 137 | £267.69 | 1-2 days |
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