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Somta Stub Drill - HSS-E Parabolic Flute TiAlN COATED - 4.3mm
| Drill Diameter | 4.30 |
| Flute Length | 24 |
| Overall Length | 58 |
| Substrate | HSS-E |
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Description
The Somta Stub Drill in the HSS-E Parabolic Flute TiAlN Coated (163-X) series is a high‑performance drill bit designed for demanding metalworking tasks. Made from HSS‑E material with a TiAlN coating, it delivers excellent hardness, heat resistance, and wear life to produce precise holes consistently.
With a 4.3 mm diameter, the parabolic flute design enhances chip evacuation and reduces heat buildup, while the stub length provides exceptional rigidity for stable, accurate drilling in tougher materials and tight spaces.
- Efficient chip evacuation with parabolic flute: The parabolic flute geometry keeps chips moving away from the cutting edge, reducing heat buildup and helping maintain consistent hole quality even in long, demanding drilling runs.
- TiAlN coating for wear and heat resistance: The Titanium Aluminium Nitride coating lowers friction, improves tool life, and performs better under high temperatures, helping you drill longer between changes.
- Stub length for rigidity and precision: Shorter overall length increases stiffness, minimizes deflection, and delivers cleaner, more accurate holes in challenging materials and tight tolerances.
This combination supports efficient, reliable drilling with predictable results, helping you finish projects faster while reducing downtime and tool wear. The 4.3 mm stub drill is suited for precise pilot and through-hole work across a range of metals, delivering repeatable performance that you can trust in daily tasks.
Part Numbers
- Protool Part Number
- 1630430X
- Brand
- Somta
- Category
- Drill
Need cutting data? Call 01732 887334 or email sales@protool-ltd.co.uk.
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: Somta Stub Drill - HSS-E Parabolic Flute TiAlN COATED (163-X)
View full collection →You are viewing 1630430X. Click any other SKU to view its full details.
| Product SKU | Drill Diameter | Flute Length | Overall Length | Shank Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|
| 1630100X | 1.00 | 6 | 26 | 1 | £2.65 | In Stock | |
| 1630110X | 1.10 | 7 | 28 | 1.1 | £2.65 | In Stock | |
| 1630120X | 1.20 | 8 | 30 | 1.2 | £2.65 | In Stock | |
| 1630130X | 1.30 | 8 | 30 | 1.3 | £2.65 | In Stock | |
| 1630140X | 1.40 | 9 | 32 | 1.4 | £2.65 | In Stock | |
| 1630150X | 1.50 | 9 | 32 | 1.5 | £2.69 | In Stock | |
| 1630160X | 1.60 | 10 | 34 | 1.6 | £2.69 | In Stock | |
| 1630170X | 1.70 | 10 | 34 | 1.7 | £2.69 | In Stock | |
| 1630180X | 1.80 | 11 | 36 | 1.8 | £2.69 | In Stock | |
| 1630190X | 1.90 | 11 | 36 | 1.9 | £2.69 | In Stock | |
| 1630200X | 2.00 | 12 | 38 | 2 | £2.80 | 1-2 days | |
| 1630210X | 2.10 | 12 | 38 | 2.1 | £2.80 | In Stock | |
| 1630220X | 2.20 | 13 | 40 | 2.2 | £2.80 | In Stock | |
| 1630230X | 2.30 | 13 | 40 | 2.3 | £2.80 | In Stock | |
| 1630240X | 2.40 | 14 | 43 | 2.4 | £2.80 | 1-2 days | |
| 1630250X | 2.50 | 14 | 43 | 2.5 | £2.82 | 1-2 days | |
| 1630260X | 2.60 | 14 | 43 | 2.6 | £2.82 | In Stock | |
| 1630270X | 2.70 | 16 | 46 | 2.7 | £2.82 | 1-2 days | |
| 1630280X | 2.80 | 16 | 46 | 2.8 | £2.82 | 1-2 days | |
| 1630290X | 2.90 | 16 | 46 | 2.9 | £2.82 | 1-2 days | |
| 1630300X | 3.00 | 16 | 46 | 3 | £2.93 | In Stock | |
| 1630310X | 3.10 | 18 | 49 | 3.1 | £3.37 | In Stock | |
| 1630320X | 3.20 | 18 | 49 | 3.2 | £3.37 | In Stock | |
| 1630330X | 3.30 | 18 | 49 | 3.3 | £3.37 | 1-2 days | |
| 1630340X | 3.40 | 20 | 52 | 3.4 | £3.73 | In Stock | |
| 1630350X | 3.50 | 20 | 52 | 3.5 | £4.75 | In Stock | |
| 1630360X | 3.60 | 20 | 52 | 3.6 | £4.75 | In Stock | |
| 1630370X | 3.70 | 20 | 52 | 3.7 | £4.75 | In Stock | |
| 1630380X | 3.80 | 22 | 55 | 3.8 | £4.75 | In Stock | |
| 1630390X | 3.90 | 22 | 55 | 3.9 | £4.75 | In Stock | |
| 1630400X | 4.00 | 22 | 55 | 4 | £5.66 | In Stock | |
| 1630410X | 4.10 | 22 | 55 | 4.1 | £5.66 | In Stock | |
| 1630420X | 4.20 | 22 | 55 | 4.2 | £5.66 | 1-2 days | |
| 1630430X Viewing | 4.30 | 24 | 58 | 4.3 | £5.66 | In Stock | |
| 1630440X | 4.40 | 24 | 58 | 4.4 | £5.66 | In Stock | |
| 1630450X | 4.50 | 24 | 58 | 4.5 | £5.70 | In Stock | |
| 1630460X | 4.60 | 24 | 58 | 4.6 | £5.70 | In Stock | |
| 1630480X | 4.80 | 26 | 62 | 4.8 | £5.70 | In Stock | |
| 1630490X | 4.90 | 26 | 62 | 4.9 | £5.70 | In Stock | |
| 1630500X | 5.00 | 26 | 62 | 5 | £5.98 | 1-2 days | |
| 1630510X | 5.10 | 26 | 62 | 5.1 | £5.98 | In Stock | |
| 1630520X | 5.20 | 26 | 62 | 5.2 | £5.98 | In Stock | |
| 1630530X | 5.30 | 26 | 62 | 5.3 | £5.98 | In Stock | |
| 1630540X | 5.40 | 28 | 66 | 5.4 | £5.98 | In Stock | |
| 1630550X | 5.50 | 28 | 66 | 5.5 | £6.70 | In Stock | |
| 1630560X | 5.60 | 28 | 66 | 5.6 | £6.70 | In Stock | |
| 1630570X | 5.70 | 28 | 66 | 5.7 | £6.70 | In Stock | |
| 1630580X | 5.80 | 28 | 66 | 5.8 | £6.70 | In Stock | |
| 1630590X | 5.90 | 28 | 66 | 5.9 | £6.70 | In Stock | |
| 1630600X | 6.00 | 28 | 66 | 6 | £7.29 | In Stock | |
| 1630610X | 6.10 | 31 | 70 | 6.1 | £7.29 | In Stock | |
| 1630620X | 6.20 | 31 | 70 | 6.2 | £7.29 | In Stock | |
| 1630630X | 6.30 | 31 | 70 | 6.3 | £7.29 | In Stock | |
| 1630640X | 6.40 | 31 | 70 | 6.4 | £7.29 | In Stock | |
| 1630650X | 6.50 | 31 | 70 | 6.5 | £7.89 | In Stock | |
| 1630660X | 6.60 | 31 | 70 | 6.6 | £7.89 | In Stock | |
| 1630670X | 6.70 | 31 | 70 | 6.7 | £7.89 | In Stock | |
| 1630680X | 6.80 | 34 | 74 | 6.8 | £7.89 | In Stock | |
| 1630690X | 6.90 | 34 | 74 | 6.9 | £7.89 | In Stock | |
| 1630700X | 7.00 | 34 | 74 | 7 | £8.27 | In Stock | |
| 1630710X | 7.10 | 34 | 74 | 7.1 | £8.27 | In Stock | |
| 1630720X | 7.20 | 34 | 74 | 7.2 | £8.27 | In Stock | |
| 1630730X | 7.30 | 34 | 74 | 7.3 | £8.27 | In Stock | |
| 1630740X | 7.40 | 34 | 74 | 7.4 | £8.27 | In Stock | |
| 1630750X | 7.50 | 34 | 74 | 7.5 | £9.54 | In Stock | |
| 1630760X | 7.60 | 37 | 79 | 7.6 | £9.54 | In Stock | |
| 1630770X | 7.70 | 37 | 79 | 7.7 | £9.54 | In Stock | |
| 1630780X | 7.80 | 37 | 79 | 7.8 | £9.54 | In Stock | |
| 1630790X | 7.90 | 37 | 79 | 7.9 | £9.54 | In Stock | |
| 1630800X | 8.00 | 37 | 79 | 8 | £10.05 | In Stock | |
| 1630810X | 8.10 | 37 | 79 | 8.1 | £10.05 | In Stock | |
| 1630820X | 8.20 | 37 | 79 | 8.2 | £10.05 | In Stock | |
| 1630830X | 8.30 | 37 | 79 | 8.3 | £10.05 | In Stock | |
| 1630840X | 8.40 | 37 | 79 | 8.4 | £10.05 | In Stock | |
| 1630850X | 8.50 | 37 | 79 | 8.5 | £12.23 | 1-2 days | |
| 1630860X | 8.60 | 40 | 84 | 8.6 | £12.23 | In Stock | |
| 1630870X | 8.70 | 40 | 84 | 8.7 | £12.23 | In Stock | |
| 1630880X | 8.80 | 40 | 84 | 8.8 | £12.23 | In Stock | |
| 1630890X | 8.90 | 40 | 84 | 8.9 | £12.23 | In Stock | |
| 1630900X | 9.00 | 40 | 84 | 9 | £12.51 | In Stock | |
| 1630910X | 9.10 | 40 | 84 | 9.1 | £12.51 | In Stock | |
| 1630920X | 9.20 | 40 | 84 | 9.2 | £12.51 | In Stock | |
| 1630930X | 9.30 | 40 | 84 | 9.3 | £12.51 | In Stock | |
| 1630940X | 9.40 | 40 | 84 | 9.4 | £12.51 | In Stock | |
| 1630950X | 9.50 | 40 | 84 | 9.5 | £13.23 | In Stock | |
| 1630960X | 9.60 | 43 | 89 | 9.6 | £13.23 | In Stock | |
| 1630970X | 9.70 | 43 | 89 | 9.7 | £13.23 | In Stock | |
| 1630980X | 9.80 | 43 | 89 | 9.8 | £13.23 | In Stock | |
| 1630990X | 9.90 | 43 | 89 | 9.9 | £13.23 | In Stock | |
| 1631000X | 10.00 | 43 | 89 | 10 | £14.39 | In Stock | |
| 1631020X | 10.20 | 43 | 89 | 10.2 | £14.39 | In Stock | |
| 1631050X | 10.50 | 43 | 89 | 10.5 | £15.39 | In Stock | |
| 1631080X | 10.80 | 47 | 95 | 10.8 | £15.39 | 1-2 days | |
| 1631100X | 11.00 | 47 | 95 | 11 | £16.30 | In Stock | |
| 1631120X | 11.20 | 47 | 95 | 11.2 | £16.98 | In Stock | |
| 1631150X | 11.50 | 47 | 95 | 11.5 | £17.07 | In Stock | |
| 1631200X | 12.00 | 51 | 102 | 12 | £19.67 | In Stock | |
| 1631250X | 12.50 | 51 | 102 | 12.5 | £22.92 | In Stock | |
| 1631300X | 13.00 | 51 | 102 | 13 | £23.89 | In Stock |
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