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Dormer Pramet A110 8.50 mm HSS ST STRAIGHT SHANK LONG SERIES DRILL DIN 340
SKU:DOR-A1108.5
Meet the Dormer Pramet A110 8.50 mm HSS ST Straight Shank Long Series Drill DIN 340 — a purpose-built twist drill that combines reach, precision, and dependable performance for demanding metalwork...
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Material Compatibility
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Specification
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| Type | Long Series |
| Drill Diameter | 8.50 |
| Flute Length | 109 |
| Overall Length | 165 |
| Shank Diameter | 8.5 |
| Substrate | HSS |
£10.40
Prices shown ex. VAT
2 days estimated lead time
— subject to availability
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Free delivery over £50 ex VAT
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30+ years expertise
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
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Learn more about Klarna
Meet the Dormer Pramet A110 8.50 mm HSS ST Straight Shank Long Series Drill DIN 340 — a purpose-built twist drill that combines reach, precision, and dependable performance for demanding metalworking tasks. Designed for both hand-held and machine drilling, this drill bit is ready to tackle deeper holes without sacrificing accuracy or control.
- 118° conventional point: Provides a strong, self-centering start that reduces wandering and delivers clean, true holes. The point is easy to re-grind, extending tool life when you’re working with tough materials.
- Steam oxide finish: A smart coating that minimizes built-up edge and prevents workpiece material from sticking to the cutting edge, promoting smoother cutting and easier chip evacuation.
- Long length series: Optimized for deeper holes and applications where extra reach is essential, while maintaining rigidity and straightness for reliable hole quality time after time.
- Premium HSS material: High-speed steel construction delivers versatile performance across steel, aluminium, and stainless steel, with consistent drill life and dependable performance in varied projects.
- Straight shank: Classic shank design that fits a broad range of chucks and holders, delivering secure grip, minimal runout, and straightforward setup.
- DIN 340 compliant: Standardized dimensions ensure easy interchangeability with compatible tooling systems and accessories in professional workshops.
- Versatile application: Ideal for a broad spectrum of drilling needs, from fabrication and maintenance to precision engineering, in both handheld and machine environments.
Use cases you’ll appreciate include drilling deeper holes in steel plate, aluminum components, and stainless steel assemblies, where reach and hole quality matter most. The 8.50 mm diameter is a reliable choice for clean pilot-to-final hole steps in multi-material projects, making this drill a staple in workshops, fabrication shops, and repair routines.
Practical tips for optimal performance:
- Start with a steady, moderate feed and apply light lubrication to extend tool life and improve surface finish.
- Align your workpiece securely and use a pilot hole when needed to improve accuracy and prevent wandering.
- Keep the cut dry or lightly lubricated on steel; re-sharpen the point as soon as you notice chatter or increased resistance.
| Type | Long Series |
| Drill Diameter | 8.50 |
| Flute Length | 109 |
| Overall Length | 165 |
| Shank Diameter | 8.5 |
| Substrate | HSS |
| Coated | Steam Tempered |
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.
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Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .
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Buying experience
Phone requests are handled quickly and without any fuss. The website is easy to use and straightforward to order from. It’s especially helpful that it shows real‑time availability, so we don’t need to call to confirm whether parts will arrive.
Full Range: Dormer Pramet A110 HSS ST STRAIGHT SHANK LONG SERIES DRILLS DIN 340
View full collection →You are viewing DOR-A1108.5. Click any other SKU to view its full details.
| Product SKU | Drill Diameter | Flute Length | Overall Length | Shank Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|
| DOR-A110.5 | 0.50 | 12 | 32 | 0.5 | £9.76 | 2 days | |
| DOR-A110.6 | 0.60 | 15 | 35 | 0.6 | £8.60 | 2 days | |
| DOR-A110.7 | 0.70 | 21 | 42 | 0.7 | £7.84 | 2 days | |
| DOR-A1101/32 | 1/32 | 25 | 46 | 0.79 | £3.89 | 2 days | |
| DOR-A110.8 | 0.80 | 25 | 46 | 0.8 | £7.11 | 2 days | |
| DOR-A110.9 | 0.90 | 29 | 51 | 0.9 | £6.46 | 2 days | |
| DOR-A1101.0 | 1.00 | 33 | 56 | 1 | £3.86 | 2 days | |
| DOR-A1101.1 | 1.10 | 37 | 60 | 1.1 | £3.71 | 2 days | |
| DOR-A1101.2 | 1.20 | 41 | 65 | 1.2 | £3.77 | 2 days | |
| DOR-A1101.3 | 1.30 | 41 | 65 | 1.3 | £3.06 | 2 days | |
| DOR-A1101.4 | 1.40 | 45 | 70 | 1.4 | £3.44 | 2 days | |
| DOR-A1101.5 | 1.50 | 45 | 70 | 1.5 | £3.42 | 2 days | |
| DOR-A1101/16 | 1/16 | 50 | 76 | 1.59 | £3.30 | 2 days | |
| DOR-A1101.6 | 1.60 | 50 | 76 | 1.6 | £3.36 | 2 days | |
| DOR-A1101.7 | 1.70 | 50 | 76 | 1.7 | £2.99 | 2 days | |
| DOR-A1101.75 | 1.75 | 53 | 80 | 1.75 | £4.53 | 2 days | |
| DOR-A1101.8 | 1.80 | 53 | 80 | 1.8 | £3.18 | 2 days | |
| DOR-A1101.9 | 1.90 | 53 | 80 | 1.9 | £3.42 | 2 days | |
| DOR-A1105/64 | 5/64 | 56 | 85 | 1.98 | £3.42 | 2 days | |
| DOR-A1102.0 | 2.00 | 56 | 85 | 2 | £2.69 | 2 days | |
| DOR-A1102.05 | 2.05 | 56 | 85 | 2.05 | £4.33 | 2 days | |
| DOR-A1102.1 | 2.10 | 56 | 85 | 2.1 | £2.89 | 2 days | |
| DOR-A1102.2 | 2.20 | 59 | 90 | 2.2 | £3.07 | 2 days | |
| DOR-A1102.25 | 2.25 | 59 | 90 | 2.25 | £4.41 | 2 days | |
| DOR-A1102.3 | 2.30 | 59 | 90 | 2.3 | £3.18 | 2 days | |
| DOR-A1103/32 | 3/32 | 62 | 95 | 2.38 | £3.18 | 2 days | |
| DOR-A1102.4 | 2.40 | 62 | 95 | 2.4 | £3.86 | 2 days | |
| DOR-A1102.5 | 2.50 | 62 | 95 | 2.5 | £2.78 | 2 days | |
| DOR-A1102.6 | 2.60 | 62 | 95 | 2.6 | £3.86 | In Stock | |
| DOR-A1102.7 | 2.70 | 66 | 100 | 2.7 | £3.47 | 2 days | |
| DOR-A1107/64 | 7/64 | 66 | 100 | 2.78 | £3.47 | 2 days | |
| DOR-A1102.8 | 2.80 | 66 | 100 | 2.8 | £3.13 | 2 days | |
| DOR-A1102.9 | 2.90 | 66 | 100 | 2.9 | £3.42 | 2 days | |
| DOR-A1103.0 | 3.00 | 66 | 100 | 3 | £2.78 | 2 days | |
| DOR-A1103.1 | 3.10 | 69 | 106 | 3.1 | £3.30 | 2 days | |
| DOR-A1101/8 | 1/8 | 69 | 106 | 3.18 | £3.13 | 2 days | |
| DOR-A1103.2 | 3.20 | 69 | 106 | 3.2 | £3.13 | 2 days | |
| DOR-A1103.25 | 3.25 | 69 | 106 | 3.25 | £4.83 | 2 days | |
| DOR-A1103.3 | 3.30 | 69 | 106 | 3.3 | £3.36 | 2 days | |
| DOR-A1103.4 | 3.40 | 73 | 112 | 3.4 | £3.97 | 2 days | |
| DOR-A1103.5 | 3.50 | 73 | 112 | 3.5 | £3.27 | 2 days | |
| DOR-A1109/64 | 9/64 | 73 | 112 | 3.57 | £3.24 | 2 days | |
| DOR-A1103.6 | 3.60 | 73 | 112 | 3.6 | £3.24 | 2 days | |
| DOR-A1103.7 | 3.70 | 73 | 112 | 3.7 | £3.89 | 2 days | |
| DOR-A1103.75 | 3.75 | 73 | 112 | 3.75 | £5.20 | 2 days | |
| DOR-A1103.8 | 3.80 | 78 | 119 | 3.8 | £3.62 | 2 days | |
| DOR-A1103.9 | 3.90 | 78 | 119 | 3.9 | £3.31 | 2 days | |
| DOR-A1105/32 | 5/32 | 78 | 119 | 3.97 | £3.37 | 2 days | |
| DOR-A1104.0 | 4.00 | 78 | 119 | 4 | £3.37 | 2 days | |
| DOR-A1104.1 | 4.10 | 78 | 119 | 4.1 | £4.47 | 2 days | |
| DOR-A1104.2 | 4.20 | 78 | 119 | 4.2 | £3.86 | 2 days | |
| DOR-A1104.25 | 4.25 | 78 | 119 | 4.25 | £6.64 | 2 days | |
| DOR-A1104.3 | 4.30 | 82 | 126 | 4.3 | £4.16 | 2 days | |
| DOR-A11011/64 | 11/64 | 82 | 126 | 4.37 | £4.10 | 2 days | |
| DOR-A1104.4 | 4.40 | 82 | 126 | 4.4 | £4.33 | 2 days | |
| DOR-A1104.5 | 4.50 | 82 | 126 | 4.5 | £4.04 | 2 days | |
| DOR-A1104.6 | 4.60 | 82 | 126 | 4.6 | £4.41 | 2 days | |
| DOR-A1104.7 | 4.70 | 82 | 126 | 4.7 | £4.70 | 2 days | |
| DOR-A1104.75 | 4.75 | 82 | 126 | 4.75 | £6.98 | 2 days | |
| DOR-A1103/16 | 3/16 | 87 | 132 | 4.76 | £4.83 | 2 days | |
| DOR-A1104.8 | 4.80 | 87 | 132 | 4.8 | £4.83 | 2 days | |
| DOR-A1104.9 | 4.90 | 87 | 132 | 4.9 | £4.86 | 2 days | |
| DOR-A1105.0 | 5.00 | 87 | 132 | 5 | £4.33 | 2 days | |
| DOR-A1105.1 | 5.10 | 87 | 132 | 5.1 | £5.46 | 2 days | |
| DOR-A11013/64 | 13/64 | 87 | 132 | 5.16 | £5.09 | 2 days | |
| DOR-A1105.2 | 5.20 | 87 | 132 | 5.2 | £5.14 | 2 days | |
| DOR-A1105.25 | 5.25 | 87 | 132 | 5.25 | £8.33 | 2 days | |
| DOR-A1105.3 | 5.30 | 87 | 132 | 5.3 | £5.56 | 2 days | |
| DOR-A1105.4 | 5.40 | 91 | 139 | 5.4 | £4.68 | 2 days | |
| DOR-A1105.5 | 5.50 | 91 | 139 | 5.5 | £5.50 | 2 days | |
| DOR-A1107/32 | 7/32 | 91 | 139 | 5.56 | £5.56 | 2 days | |
| DOR-A1105.6 | 5.60 | 91 | 139 | 5.6 | £5.96 | 2 days | |
| DOR-A1105.7 | 5.70 | 91 | 139 | 5.7 | £5.41 | 2 days | |
| DOR-A1105.75 | 5.75 | 91 | 139 | 5.75 | £8.76 | 2 days | |
| DOR-A1105.8 | 5.80 | 91 | 139 | 5.8 | £5.50 | 2 days | |
| DOR-A1105.9 | 5.90 | 91 | 139 | 5.9 | £6.16 | 2 days | |
| DOR-A11015/64 | 15/64 | 91 | 139 | 5.95 | £6.25 | 2 days | |
| DOR-A1106.0 | 6.00 | 91 | 139 | 6 | £5.46 | 2 days | |
| DOR-A1106.1 | 6.10 | 97 | 148 | 6.1 | £6.52 | 2 days | |
| DOR-A1106.2 | 6.20 | 97 | 148 | 6.2 | £6.43 | 2 days | |
| DOR-A1106.25 | 6.25 | 97 | 148 | 6.25 | £10.40 | 2 days | |
| DOR-A1106.3 | 6.30 | 97 | 148 | 6.3 | £6.46 | 2 days | |
| DOR-A1101/4 | 1/4 | 97 | 148 | 6.35 | £6.16 | 2 days | |
| DOR-A1106.4 | 6.40 | 97 | 148 | 6.4 | £7.69 | 2 days | |
| DOR-A1106.5 | 6.50 | 97 | 148 | 6.5 | £6.98 | 2 days | |
| DOR-A1106.6 | 6.60 | 97 | 148 | 6.6 | £6.66 | 2 days | |
| DOR-A1106.7 | 6.70 | 97 | 148 | 6.7 | £7.92 | 2 days | |
| DOR-A11017/64 | 17/64 | 102 | 156 | 6.75 | £6.69 | 2 days | |
| DOR-A1106.75 | 6.75 | 102 | 156 | 6.75 | £8.44 | 2 days | |
| DOR-A1106.8 | 6.80 | 102 | 156 | 6.8 | £7.71 | 2 days | |
| DOR-A1106.9 | 6.90 | 102 | 156 | 6.9 | £8.34 | 2 days | |
| DOR-A1107.0 | 7.00 | 102 | 156 | 7 | £7.37 | 2 days | |
| DOR-A1107.1 | 7.10 | 102 | 156 | 7.1 | £12.25 | 2 days | |
| DOR-A1109/32 | 9/32 | 102 | 156 | 7.14 | £8.01 | 2 days | |
| DOR-A1107.2 | 7.20 | 102 | 156 | 7.2 | £10.90 | 2 days | |
| DOR-A1107.25 | 7.25 | 102 | 156 | 7.25 | £10.40 | 2 days | |
| DOR-A1107.3 | 7.30 | 102 | 156 | 7.3 | £11.26 | 2 days | |
| DOR-A1107.4 | 7.40 | 102 | 156 | 7.4 | £12.66 | 2 days | |
| DOR-A1107.5 | 7.50 | 102 | 156 | 7.5 | £9.07 | 2 days | |
| DOR-A1107.6 | 7.60 | 109 | 165 | 7.6 | £13.30 | 2 days | |
| DOR-A1107.7 | 7.70 | 109 | 165 | 7.7 | £12.39 | 2 days | |
| DOR-A1107.75 | 7.75 | 109 | 165 | 7.75 | £11.13 | 2 days | |
| DOR-A1107.8 | 7.80 | 109 | 165 | 7.8 | £10.79 | 2 days | |
| DOR-A1107.9 | 7.90 | 109 | 165 | 7.9 | £10.08 | 2 days | |
| DOR-A1105/16 | 5/16 | 109 | 165 | 7.94 | £8.85 | 2 days | |
| DOR-A1108.0 | 8.00 | 109 | 165 | 8 | £9.12 | 2 days | |
| DOR-A1108.1 | 8.10 | 109 | 165 | 8.1 | £13.59 | 2 days | |
| DOR-A1108.2 | 8.20 | 109 | 165 | 8.2 | £12.77 | 2 days | |
| DOR-A1108.25 | 8.25 | 109 | 165 | 8.25 | £14.03 | 2 days | |
| DOR-A1108.3 | 8.30 | 109 | 165 | 8.3 | £12.98 | 2 days | |
| DOR-A1108.4 | 8.40 | 109 | 165 | 8.4 | £12.08 | 2 days | |
| DOR-A1108.5 Viewing | 8.50 | 109 | 165 | 8.5 | £10.40 | 2 days | |
| DOR-A1108.6 | 8.60 | 115 | 175 | 8.6 | £15.82 | 2 days | |
| DOR-A1108.7 | 8.70 | 115 | 175 | 8.7 | £15.17 | 2 days | |
| DOR-A11011/32 | 11/32 | 115 | 175 | 8.73 | £11.08 | 2 days | |
| DOR-A1108.75 | 8.75 | 115 | 175 | 8.75 | £18.65 | 2 days | |
| DOR-A1108.8 | 8.80 | 115 | 175 | 8.8 | £15.18 | 2 days | |
| DOR-A1109.0 | 9.00 | 115 | 175 | 9 | £11.20 | 2 days | |
| DOR-A1109.1 | 9.10 | 115 | 175 | 9.1 | £15.94 | 2 days | |
| DOR-A1109.2 | 9.20 | 115 | 175 | 9.2 | £17.69 | 2 days | |
| DOR-A1109.3 | 9.30 | 115 | 175 | 9.3 | £19.00 | 2 days | |
| DOR-A1109.5 | 9.50 | 115 | 175 | 9.5 | £12.86 | 2 days | |
| DOR-A1103/8 | 3/8 | 121 | 184 | 9.52 | £13.00 | 2 days | |
| DOR-A1109.6 | 9.60 | 121 | 184 | 9.6 | £18.92 | 2 days | |
| DOR-A1109.7 | 9.70 | 121 | 184 | 9.7 | £17.95 | 2 days | |
| DOR-A1109.8 | 9.80 | 121 | 184 | 9.8 | £16.83 | 2 days | |
| DOR-A1109.9 | 9.90 | 121 | 184 | 9.9 | £16.40 | 2 days | |
| DOR-A11010.0 | 10.00 | 121 | 184 | 10 | £13.25 | 2 days | |
| DOR-A11010.1 | 10.10 | 121 | 184 | 10.1 | £18.79 | 2 days | |
| DOR-A11010.2 | 10.20 | 121 | 184 | 10.2 | £18.59 | 2 days | |
| DOR-A11010.25 | 10.25 | 121 | 184 | 10.25 | £20.29 | 2 days | |
| DOR-A11010.3 | 10.30 | 121 | 184 | 10.3 | £23.12 | 2 days | |
| DOR-A11013/32 | 13/32 | 121 | 184 | 10.32 | £15.49 | 2 days | |
| DOR-A11010.5 | 10.50 | 121 | 184 | 10.5 | £16.32 | 2 days | |
| DOR-A11010.75 | 10.75 | 128 | 195 | 10.75 | £20.57 | 2 days | |
| DOR-A11010.8 | 10.80 | 128 | 195 | 10.8 | £19.79 | 2 days | |
| DOR-A11011.0 | 11.00 | 128 | 195 | 11 | £17.91 | 2 days | |
| DOR-A1107/16 | 7/16 | 128 | 195 | 11.11 | £18.27 | 2 days | |
| DOR-A11011.5 | 11.50 | 128 | 195 | 11.5 | £19.41 | 2 days | |
| DOR-A11011.75 | 11.75 | 128 | 195 | 11.75 | £25.17 | 2 days | |
| DOR-A11012.0 | 12.00 | 134 | 205 | 12 | £21.10 | 2 days | |
| DOR-A11012.1 | 12.10 | 134 | 205 | 12.1 | £27.31 | 2 days | |
| DOR-A11012.25 | 12.25 | 134 | 205 | 12.25 | £30.37 | 2 days | |
| DOR-A11012.5 | 12.50 | 134 | 205 | 12.5 | £23.21 | 2 days | |
| DOR-A1101/2 | 1/2 | 134 | 205 | 12.7 | £23.85 | 2 days | |
| DOR-A11013.0 | 13.00 | 134 | 205 | 13 | £24.03 | 2 days | |
| DOR-A11017/32 | 17/32 | 140 | 214 | 13.49 | £32.33 | 2 days | |
| DOR-A11013.5 | 13.50 | 140 | 214 | 13.5 | £33.29 | 2 days | |
| DOR-A11014.0 | 14.00 | 140 | 214 | 14 | £27.95 | 2 days | |
| DOR-A1109/16 | 9/16 | 144 | 220 | 14.29 | £36.02 | 2 days | |
| DOR-A11014.5 | 14.50 | 144 | 220 | 14.5 | £36.89 | 2 days | |
| DOR-A11015.0 | 15.00 | 144 | 220 | 15 | £33.74 | 2 days | |
| DOR-A11015.5 | 15.50 | 149 | 227 | 15.5 | £54.72 | 2 days | |
| DOR-A1105/8 | 5/8 | 149 | 227 | 15.88 | £46.97 | 2 days | |
| DOR-A11016.0 | 16.00 | 149 | 227 | 16 | £40.31 | 2 days | |
| DOR-A11016.5 | 16.50 | 154 | 235 | 16.5 | £58.82 | 2 days | |
| DOR-A11017.0 | 17.00 | 154 | 235 | 17 | £48.79 | 2 days | |
| DOR-A11017.5 | 17.50 | 158 | 241 | 17.5 | £67.49 | 2 days | |
| DOR-A11018.0 | 18.00 | 158 | 241 | 18 | £50.62 | 2 days | |
| DOR-A11018.5 | 18.50 | 162 | 247 | 18.5 | £84.82 | 2 days | |
| DOR-A11019.0 | 19.00 | 162 | 247 | 19 | £61.56 | 2 days | |
| DOR-A1103/4 | 3/4 | 166 | 254 | 19.05 | £71.14 | 2 days | |
| DOR-A11019.5 | 19.50 | 166 | 254 | 19.5 | £112.63 | 2 days | |
| DOR-A11020.0 | 20.00 | 166 | 254 | 20 | £69.77 | 2 days | |
| DOR-A11021.0 | 21.00 | 171 | 261 | 21 | £87.10 | 2 days | |
| DOR-A11022.0 | 22.00 | 176 | 268 | 22 | £93.02 | 2 days | |
| DOR-A1107/8 | 7/8 | 176 | 268 | 22.22 | £98.04 | 2 days | |
| DOR-A1101 | 25.40 | 190 | 290 | 25.4 | £117.65 | 2 days |
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