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Somta Long Series Drill - HSS-E Parabolic Flute - 4.1mm
| Drill Diameter | 4.10 |
| Flute Length | 78 |
| Overall Length | 119 |
| Substrate | HSS-E |
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Description
Somta Long Series Drill - HSS-E Parabolic Flute - 4.1mm is engineered for deep-hole drilling tasks, delivering dependable performance when you need to reach through thick materials with precision.
Built around an extended flute and long-series geometry, this drill knife-through-thick workpieces with confidence. The design is purpose-built for deep-hole applications, where standard bits struggle to maintain accuracy or rigidity. Its length enables true through-hole reach without sacrificing hole straightness or finish.
Crafted from HSS-E (high-speed steel with cobalt), the tool blends exceptional wear resistance with superior heat tolerance. That means steady performance under demanding drilling conditions, less edge dulling, and longer tool life even when you're pushing feeds and depths.
The parabolic flute is more than a visual cue—it’s a functional advantage. The broad, sweeping flute geometry promotes fast chip evacuation and reduces cutting forces, helping to keep temperatures lower and acceleration smoother during entry and exit. The result is cleaner holes, less vibration, and improved reliability for high-productivity setups.
Key use cases include precision through-holes in thick steel plates, aluminum assemblies, and other common ferrous and non-ferrous materials where reach and hole quality matter. Pair it with appropriate lubrication or coolant for extended life, especially on hard-to-reach workpieces or multi-pass drilling scenarios. This 4.1mm diameter long-series drill is designed for CNC and manual drilling alike, delivering consistent geometry from start to finish.
Why choose the Somta Long Series Drill - HSS-E Parabolic Flute - 4.1mm?
- Deep-hole capability: extended length enables reliable thru-holes in thick materials without compromising straightness.
- Durable HSS-E material: cobalt-enhanced steel offers greater wear resistance and heat tolerance for tougher jobs.
- Efficient chip evacuation: parabolic flute design minimizes clogging and reduces cutting forces for smoother drilling.
- Clean, precise holes with sharp cutting edges that maintain hole diameter and edge quality through long through-holes.
- Versatile for CNC and handheld setups: suitable for a wide range of metals and fabrication tasks.
Part Numbers
- Protool Part Number
- 1100410
- 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 Long Series Drill - HSS-E Parabolic Flute (110)
View full collection →You are viewing 1100410. Click any other SKU to view its full details.
| Product SKU | Drill Diameter | Flute Length | Overall Length | Shank Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|
| 1100100 | 1.00 | 33 | 56 | 1 | £2.42 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100110 | 1.10 | 37 | 60 | 1.1 | £2.37 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100120 | 1.20 | 41 | 65 | 1.2 | £2.57 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100130 | 1.30 | 41 | 65 | 1.3 | £2.61 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100140 | 1.40 | 41 | 70 | 1.4 | £3.88 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100150 | 1.50 | 45 | 70 | 1.5 | £4.52 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100160 | 1.60 | 50 | 76 | 1.6 | £5.02 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100170 | 1.70 | 50 | 76 | 1.7 | £4.98 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100180 | 1.80 | 53 | 80 | 1.8 | £4.90 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100190 | 1.90 | 53 | 80 | 1.9 | £4.90 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100200 | 2.00 | 56 | 85 | 2 | £4.90 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100210 | 2.10 | 56 | 85 | 2.1 | £4.90 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100220 | 2.20 | 59 | 90 | 2.2 | £5.07 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100230 | 2.30 | 59 | 90 | 2.3 | £5.07 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100240 | 2.40 | 62 | 95 | 2.4 | £5.30 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100250 | 2.50 | 62 | 95 | 2.5 | £4.47 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100260 | 2.60 | 66 | 100 | 2.6 | £4.43 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100270 | 2.70 | 66 | 100 | 2.7 | £4.66 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100280 | 2.80 | 66 | 100 | 2.8 | £4.66 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100290 | 2.90 | 66 | 100 | 2.9 | £4.58 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100300 | 3.00 | 66 | 100 | 3 | £4.47 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100310 | 3.10 | 69 | 106 | 3.1 | £4.75 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100320 | 3.20 | 69 | 106 | 3.2 | £4.66 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100330 | 3.30 | 69 | 106 | 3.3 | £4.66 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100340 | 3.40 | 73 | 112 | 3.4 | £5.30 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100350 | 3.50 | 73 | 112 | 3.5 | £5.26 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100360 | 3.60 | 73 | 112 | 3.6 | £5.19 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100370 | 3.70 | 73 | 112 | 3.7 | £5.19 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100380 | 3.80 | 78 | 119 | 3.8 | £5.38 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100390 | 3.90 | 78 | 119 | 3.9 | £5.38 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100400 | 4.00 | 78 | 119 | 4 | £5.38 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100410 Viewing | 4.10 | 78 | 119 | 4.1 | £5.94 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100420 | 4.20 | 78 | 119 | 4.2 | £5.94 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100430 | 4.30 | 82 | 126 | 4.3 | £6.49 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100440 | 4.40 | 82 | 126 | 4.4 | £6.42 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100450 | 4.50 | 82 | 126 | 4.5 | £6.42 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100460 | 4.60 | 82 | 126 | 4.6 | £7.02 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100470 | 4.70 | 82 | 126 | 4.7 | £6.81 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100480 | 4.80 | 87 | 132 | 4.8 | £7.57 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100490 | 4.90 | 87 | 132 | 4.9 | £7.50 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100500 | 5.00 | 87 | 132 | 5 | £7.00 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100510 | 5.10 | 87 | 132 | 5.1 | £7.57 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100520 | 5.20 | 87 | 132 | 5.2 | £7.50 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100530 | 5.30 | 87 | 132 | 5.3 | £6.93 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100540 | 5.40 | 91 | 139 | 5.4 | £9.18 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100550 | 5.50 | 91 | 139 | 5.5 | £9.18 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100560 | 5.60 | 91 | 139 | 5.6 | £9.14 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100570 | 5.70 | 91 | 139 | 5.7 | £9.14 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100580 | 5.80 | 91 | 139 | 5.8 | £8.99 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100590 | 5.90 | 91 | 139 | 5.9 | £8.90 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100600 | 6.00 | 91 | 139 | 6 | £8.35 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100610 | 6.10 | 97 | 148 | 6.1 | £11.07 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100620 | 6.20 | 97 | 148 | 6.2 | £10.13 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100630 | 6.30 | 97 | 148 | 6.3 | £9.54 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100640 | 6.40 | 97 | 148 | 6.4 | £10.88 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100650 | 6.50 | 97 | 148 | 6.5 | £11.70 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100660 | 6.60 | 97 | 148 | 6.6 | £10.73 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100670 | 6.70 | 97 | 148 | 6.7 | £10.09 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100680 | 6.80 | 102 | 156 | 6.8 | £12.64 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100690 | 6.90 | 102 | 156 | 6.9 | £12.51 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100700 | 7.00 | 102 | 156 | 7 | £12.36 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100710 | 7.10 | 102 | 156 | 7.1 | £11.77 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100720 | 7.20 | 102 | 156 | 7.2 | £12.78 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100730 | 7.30 | 102 | 156 | 7.3 | £12.64 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100740 | 7.40 | 102 | 156 | 7.4 | £12.51 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100750 | 7.50 | 102 | 156 | 7.5 | £11.77 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100760 | 7.60 | 109 | 165 | 7.6 | £13.53 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100770 | 7.70 | 109 | 165 | 7.7 | £13.53 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100780 | 7.80 | 109 | 165 | 7.8 | £13.42 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100790 | 7.90 | 109 | 165 | 7.9 | £13.23 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100800 | 8.00 | 109 | 165 | 8 | £12.57 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100810 | 8.10 | 109 | 165 | 8.1 | £14.42 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100820 | 8.20 | 109 | 165 | 8.2 | £14.42 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100830 | 8.30 | 109 | 165 | 8.3 | £14.42 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100840 | 8.40 | 109 | 165 | 8.4 | £14.29 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100850 | 8.50 | 109 | 165 | 8.5 | £13.53 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100860 | 8.60 | 115 | 175 | 8.6 | £15.84 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100870 | 8.70 | 115 | 175 | 8.7 | £15.90 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100880 | 8.80 | 115 | 175 | 8.8 | £15.71 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100890 | 8.90 | 115 | 175 | 8.9 | £15.56 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100900 | 9.00 | 115 | 175 | 9 | £14.80 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100910 | 9.10 | 115 | 175 | 9.1 | £16.94 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100920 | 9.20 | 115 | 175 | 9.2 | £16.94 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100930 | 9.30 | 115 | 175 | 9.3 | £16.79 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100940 | 9.40 | 115 | 175 | 9.4 | £16.62 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100950 | 9.50 | 115 | 175 | 9.5 | £15.84 per item · pack of 10 | 1-2 days | Sold in packs of 10 |
| 1100960 | 9.60 | 121 | 184 | 9.6 | £18.72 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100970 | 9.70 | 121 | 184 | 9.7 | £18.72 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100980 | 9.80 | 121 | 184 | 9.8 | £18.53 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1100990 | 9.90 | 121 | 184 | 9.9 | £18.40 per item · pack of 10 | In Stock | Sold in packs of 10 |
| 1101000 | 10.00 | 121 | 184 | 10 | £17.81 | In Stock |
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