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OSG Threading Tap Metric A-Spiral Flute - 7GX Powder Metal Right Hand -TiCN Coated - Blind Holes DIN371 - M2.5 x 0.45
| Size | M2.5 |
| Pitch | 0.45 |
| Overall Length | 50 |
| Threading Length | 3.6 |
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Description
The OSG Threading Tap Metric A-Spiral Flute, made with 7GX powder metal and TiCN coating, is a high-precision tapping tool designed for blind-hole work in metric threads. It’s ideal for machinists and engineers who demand dependable thread quality in tight or hard-to-reach cavities.
- Size / Thread: M2.5 x 0.45 metric threading for precise blind-hole applications
- Flute Design: A-Spiral flute optimizes chip evacuation in confined holes, reducing clogging
- Material: Powder metal construction delivers durability and improved wear resistance
- Coating: TiCN coating increases surface hardness and lowers friction for longer tool life
- Tolerance: 7GX tolerance class provides an extra-tight thread fit for critical assemblies
- Geometry: Right-hand thread compatible with standard metric tapping practices
- Standards: Suitable for blind-hole tapping per DIN371 specifications
In practice, this tap delivers clean, accurate threads in blind holes with consistent depth and finish. The combination of powder-metal durability, TiCN hardness, and the A-Spiral flute design reduces chip packing and tapping friction, enabling smoother operation and fewer reworks in challenging materials and limited-access environments. This makes it a reliable choice for precision enclosures, automotive components, electronics housings, and other applications where space is constrained and thread integrity matters.
Part Numbers
- Protool Part Number
- OSG-48202133
- 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 Metric A-Spiral Flute - 7GX Powder Metal Right Hand -TiCN Coated - Blind Holes
View full collection →You are viewing OSG-48202133. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Overall Length | Shank Diameter | Flutes | DIN | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| OSG-48202125 | M2 | 0.4 | 45 | 2.8 | 2 | 371 | £50.15 | In Stock | |
| OSG-48202133 Viewing | M2.5 | 0.45 | 50 | 2.8 | 2 | 371 | £49.80 | In Stock | |
| OSG-48202138 | M3 | 0.5 | 56 | 3.5 | 3 | 371 | £53.48 | In Stock | |
| OSG-48202144 | M4 | 0.7 | 63 | 4.5 | 3 | 371 | £45.03 | In Stock | |
| OSG-48202149 | M5 | 0.8 | 70 | 6 | 3 | 371 | £46.10 | In Stock | |
| OSG-48202155 | M6 | 1 | 80 | 6 | 3 | 371 | £46.42 | In Stock | |
| OSG-48202161 | M8 | 1.25 | 90 | 8 | 3 | 371 | £55.66 | In Stock | |
| OSG-48202169 | M10 | 1.5 | 100 | 10 | 3 | 371 | £67.69 | In Stock | |
| OSG-48202179 | M12 | 1.75 | 110 | 9 | 3 | 376 | £85.14 | In Stock | |
| OSG-48202191 | M14 | 2 | 110 | 11 | 3 | 376 | £71.16 | 1-2 days | |
| OSG-48202202 | M16 | 2 | 110 | 12 | 3 | 376 | £118.45 | In Stock |
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