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Somta Extra Long Series Drill - HSS-E Parabolic Flute - 15.5mm x 400mm
| Drill Diameter | 15.50 |
| Flute Length | 290 |
| Overall Length | 400 |
| Substrate | HSS-E |
| Type | Extra Long Series |
| Shank Diameter | 15.5 |
Learn more about Klarna
Introducing the Somta Extra Long Series Drill - HSS-E Parabolic Flute - 15.5mm x 400mm. This deep-hole drilling solution is built for machinists who need extended reach without sacrificing hole quality. The impressive 400 mm flute length provides uninterrupted access to deep cavities, pockets, and through-holes across a range of metal workpieces.
Engineered with HSS-E (High-Speed Steel Enhanced) for outstanding wear resistance and heat tolerance, this drill bit maintains a sharp edge through demanding deep-hole cycles, delivering reliable performance across multiple passes. The parabolic flute design optimizes chip evacuation, dramatically reducing chip clogging and heat buildup that can dull edges or affect bore quality.
Key benefits you’ll notice in practice:
- Extended reach: 400 mm flute length lets you bore deeper in engines, molds, and automotive components without repositioning the workpiece.
- Clean, accurate holes: sharp cutting edges and controlled geometry yield tight tolerances and smooth bore finishes.
- Efficient chip evacuation: parabolic flute channels chips away from the cutting edge for consistent cutting action and less clogging.
- Longevity in tough metals: HSS-E combines toughness and heat resistance to extend tool life in demanding drilling cycles.
- Consistent performance: designed to maintain stable cutting action and minimal deflection when drilling long holes.
Ideal for professional machinists, toolmakers, and fabricators who regularly require deep bore access in steel, cast iron, and other metallic workpieces. If your jobs involve deep pockets, long channels, or through-holes that demand precision and reliability, this drill is the go-to choice for dependable results.
Tip for best results: couple the Somta extra-long drill with proper fixturing, apply a steady feed, and use light coolant to manage heat during deep-hole drilling. Start with conservative speeds and adjust according to material hardness and chip evacuation performance.
| Drill Diameter | 15.50 |
| Flute Length | 290 |
| Overall Length | 400 |
| Substrate | HSS-E |
| Type | Extra Long Series |
| Shank Diameter | 15.5 |
| Coated | No |
| Standard | DIN 1869 |
| Helix Angle | 40° |
| Point Angle | 130° |
| Point Geometry | Split Point |
| Coating | Uncoated |
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 Extra Long Series Drill - HSS-E Parabolic Flute (118 - 119 - 120)
View full collection →You are viewing 1191550. Click any other SKU to view its full details.
| Product SKU | Drill Diameter | Flute Length | Overall Length | Shank Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|
| 1180201 | 2.00 | 90 | 135 | 2 | £4.16 | In Stock | |
| 1180250 | 2.50 | 95 | 140 | 2.5 | £4.79 | In Stock | |
| 1180300 | 3.00 | 100 | 150 | 3 | £5.43 | In Stock | |
| 1180301 | 3.00 | 105 | 155 | 3 | £5.70 | In Stock | |
| 1180350 | 3.50 | 115 | 165 | 3.5 | £6.02 | In Stock | |
| 1180400 | 4.00 | 120 | 175 | 4 | £7.36 | 1-2 days | |
| 1180450 | 4.50 | 125 | 185 | 4.5 | £8.90 | In Stock | |
| 1180500 | 5.00 | 135 | 195 | 5 | £10.68 | In Stock | |
| 1180550 | 5.50 | 140 | 205 | 5.5 | £12.87 | In Stock | |
| 1180600 | 6.00 | 140 | 205 | 6 | £14.08 | 1-2 days | |
| 1180650 | 6.50 | 150 | 215 | 6.5 | £16.30 | In Stock | |
| 1180700 | 7.00 | 155 | 225 | 7 | £18.80 | In Stock | |
| 1180750 | 7.50 | 155 | 225 | 7.5 | £20.82 | In Stock | |
| 1180800 | 8.00 | 165 | 240 | 8 | £32.22 | In Stock | |
| 1180850 | 8.50 | 165 | 240 | 8.5 | £26.84 | In Stock | |
| 1180900 | 9.00 | 175 | 250 | 9 | £30.55 | 1-2 days | |
| 1180950 | 9.50 | 175 | 250 | 9.5 | £33.33 | In Stock | |
| 1181000 | 10.00 | 185 | 265 | 10 | £38.27 | In Stock | |
| 1181100 | 11.00 | 195 | 280 | 11 | £45.60 | In Stock | |
| 1181150 | 11.50 | 195 | 280 | 11.5 | £49.12 | In Stock | |
| 1181200 | 12.00 | 205 | 295 | 12 | £55.29 | In Stock | |
| 1181250 | 12.50 | 205 | 295 | 12.5 | £59.34 | 1-2 days | |
| 1181300 | 13.00 | 205 | 295 | 13 | £63.60 | 1-2 days | |
| 1181350 | 13.50 | 220 | 310 | 13.5 | £73.10 | In Stock | |
| 1181400 | 14.00 | 220 | 310 | 14 | £78.08 | In Stock | |
| 1181450 | 14.50 | 220 | 310 | 14.5 | £82.17 | 1-2 days | |
| 1181500 | 15.00 | 220 | 310 | 15 | £86.92 | In Stock | |
| 1181550 | 15.50 | 230 | 320 | 15.5 | £99.66 | In Stock | |
| 1181600 | 16.00 | 230 | 320 | 16 | £101.00 | In Stock | |
| 1190301 | 3.00 | 135 | 200 | 3 | £7.00 | In Stock | |
| 1190350 | 3.50 | 145 | 210 | 3.5 | £7.87 | In Stock | |
| 1190400 | 4.00 | 150 | 220 | 4 | £9.60 | 1-2 days | |
| 1190450 | 4.50 | 160 | 235 | 4.5 | £11.00 | 1-2 days | |
| 1190500 | 5.00 | 170 | 245 | 5 | £13.10 | 1-2 days | |
| 1190550 | 5.50 | 180 | 260 | 5.5 | £15.67 | In Stock | |
| 1190600 | 6.00 | 180 | 260 | 6 | £17.21 | In Stock | |
| 1190650 | 6.50 | 190 | 275 | 6.5 | £20.27 | In Stock | |
| 1190700 | 7.00 | 200 | 290 | 7 | £22.83 | 1-2 days | |
| 1190750 | 7.50 | 200 | 290 | 7.5 | £25.42 | In Stock | |
| 1190800 | 8.00 | 210 | 305 | 8 | £29.49 | 1-2 days | |
| 1190850 | 8.50 | 210 | 305 | 8.5 | £32.65 | In Stock | |
| 1190900 | 9.00 | 220 | 320 | 9 | £37.44 | In Stock | |
| 1190950 | 9.50 | 220 | 320 | 9.5 | £41.00 | In Stock | |
| 1191000 | 10.00 | 235 | 340 | 10 | £47.30 | 1-2 days | |
| 1191050 | 10.50 | 235 | 340 | 10.5 | £49.52 | In Stock | |
| 1191100 | 11.00 | 250 | 365 | 11 | £57.16 | 1-2 days | |
| 1191200 | 12.00 | 260 | 375 | 12 | £68.12 | In Stock | |
| 1191250 | 12.50 | 260 | 375 | 12.5 | £73.29 | In Stock | |
| 1191300 | 13.00 | 260 | 375 | 13 | £78.59 | In Stock | |
| 1191350 | 13.50 | 275 | 380 | 13.5 | £85.41 | In Stock | |
| 1191400 | 14.00 | 275 | 380 | 14 | £89.89 | In Stock | |
| 1191450 | 14.50 | 275 | 380 | 14.5 | £100.25 | In Stock | |
| 1191500 | 15.00 | 275 | 380 | 15 | £101.21 | In Stock | |
| 1191550 Viewing | 15.50 | 290 | 400 | 15.5 | £120.44 | In Stock | |
| 1191600 | 16.00 | 290 | 400 | 16 | £120.71 | In Stock | |
| 1200400 | 4.00 | 190 | 280 | 4 | £10.54 | In Stock | |
| 1200450 | 4.50 | 200 | 295 | 4.5 | £11.43 | In Stock | |
| 1200500 | 5.00 | 210 | 315 | 5 | £13.50 | In Stock | |
| 1200550 | 5.50 | 225 | 330 | 5.5 | £16.51 | In Stock | |
| 1200600 | 6.00 | 225 | 330 | 6 | £19.91 | 1-2 days | |
| 1200650 | 6.50 | 235 | 350 | 6.5 | £23.89 | 1-2 days | |
| 1200700 | 7.00 | 250 | 370 | 7 | £27.07 | In Stock | |
| 1200750 | 7.50 | 250 | 370 | 7.5 | £30.04 | In Stock | |
| 1200800 | 8.00 | 265 | 390 | 8 | £37.21 | In Stock | |
| 1200850 | 8.50 | 265 | 390 | 8.5 | £38.90 | In Stock | |
| 1200900 | 9.00 | 280 | 410 | 9 | £44.75 | In Stock | |
| 1200950 | 9.50 | 280 | 410 | 9.5 | £49.08 | In Stock | |
| 1201000 | 10.00 | 295 | 430 | 10 | £59.34 | In Stock | |
| 1201050 | 10.50 | 295 | 430 | 10.5 | £60.55 | In Stock | |
| 1201100 | 11.00 | 300 | 455 | 11 | £69.30 | In Stock | |
| 1201150 | 11.50 | 300 | 455 | 11.5 | £75.01 | In Stock | |
| 1201200 | 12.00 | 300 | 480 | 12 | £85.05 | In Stock | |
| 1201250 | 12.50 | 300 | 480 | 12.5 | £91.58 | In Stock | |
| 1201300 | 13.00 | 300 | 480 | 13 | £98.35 | In Stock |
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