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Dormer Pramet A125 4.00 mm x 250 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328
SKU:DOR-A1254.0X250
Meet the Dormer Pramet A125 4.00 mm x 250 mm HSS ST Straight Shank Extra Long Series Drill BS 328—a precision tool built for demanding metalworking tasks where reach matters as much as accuracy. T...
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Material Compatibility
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Specification
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| Type | Extra Long Series |
| Drill Diameter | 4.00 |
| Flute Length | 200 |
| Overall Length | 250 |
| Shank Diameter | 4 |
| Substrate | HSS |
£16.13
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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14-day returns
30+ years expertise
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
Learn more about Klarna
Learn more about Klarna
Meet the Dormer Pramet A125 4.00 mm x 250 mm HSS ST Straight Shank Extra Long Series Drill BS 328—a precision tool built for demanding metalworking tasks where reach matters as much as accuracy. This drill is engineered to deliver clean, consistent holes in a variety of materials, from light chassis steel to aluminum and stainless steel, with reliability you can trust on every job.
Why this drill stands out
- 118° conventional point for robust starts and reduced wandering. The strong point resists drift when initiating holes and is easy to re-grind to maintain peak performance between sharpenings.
- Steam oxide finish minimizes material sticking to the cutting edge, promoting smoother chip evacuation and longer tool life in tough metals.
- Extra-long length (250 mm) designed for drilling very deep holes and reaching into recessed areas, pockets, or through long workpieces without changing tools.
- Premium HSS material delivers dependable cutting performance across a range of materials, including steel, aluminum, and stainless steel, while maintaining edge integrity under higher speeds and feeds.
- Straight shank versatility compatible with a wide array of drill chucks and machines, making it a practical choice for both manual tools and CNC or automated setups.
Ideal use cases
Specifications at a glance
Diameter: 4.00 mm
Overall length: 250 mm
Shank: Straight
Point angle: 118 degrees
Material: High-Speed Steel (HSS)
Finish: Steam oxide
Series: Extra Long
Standard: BS 328
Practical tips for best results
- Maintain controlled feeds and speeds suited to the material being drilled; avoid overheating to preserve the precision of the 118° point and prevent dulling.
- Peck drilling in deep-hole applications to clear chips and reduce heat buildup—pause briefly to wipe away cuttings as you progress.
- Keep the drill shank clean and securely clamped in the chuck to prevent slippage and maintain concentricity through long-hole drilling tasks.
| Type | Extra Long Series |
| Drill Diameter | 4.00 |
| Flute Length | 200 |
| Overall Length | 250 |
| Shank Diameter | 4 |
| 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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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 A125 HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILLS BS 328
View full collection →You are viewing DOR-A1254.0X250. Click any other SKU to view its full details.
| Product SKU | Drill Diameter | Flute Length | Overall Length | Shank Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|
| DOR-A1251.4X160 | 1.40 | 100 | 160 | 1.4 | £18.83 | 2 days | |
| DOR-A1251.5X125 | 1.50 | 80 | 125 | 1.5 | £10.72 | 2 days | |
| DOR-A1251.5X160 | 1.50 | 100 | 160 | 1.5 | £12.72 | 2 days | |
| DOR-A1251/16X125 | 1/16 | 80 | 125 | 1.59 | £13.07 | 2 days | |
| DOR-A1251/16X160 | 1/16 | 100 | 160 | 1.59 | £15.64 | 2 days | |
| DOR-A1251.8X160 | 1.80 | 100 | 160 | 1.8 | £16.45 | 2 days | |
| DOR-A1255/64X160 | 5/64 | 100 | 160 | 1.98 | £16.14 | 2 days | |
| DOR-A1255/64X125 | 5/64 | 80 | 125 | 1.98 | £15.49 | 2 days | |
| DOR-A1252.0X125 | 2.00 | 80 | 125 | 2 | £8.30 | 2 days | |
| DOR-A1252.0X160 | 2.00 | 100 | 160 | 2 | £9.76 | 2 days | |
| DOR-A1252.2X160 | 2.20 | 100 | 160 | 2.2 | £10.11 | 2 days | |
| DOR-A1253/32X160 | 3/32 | 100 | 160 | 2.38 | £9.79 | 2 days | |
| DOR-A1253/32X125 | 3/32 | 80 | 125 | 2.38 | £8.94 | 2 days | |
| DOR-A1252.5X125 | 2.50 | 80 | 125 | 2.5 | £7.84 | 2 days | |
| DOR-A1252.5X160 | 2.50 | 100 | 160 | 2.5 | £9.65 | 2 days | |
| DOR-A1257/64X125 | 7/64 | 80 | 125 | 2.78 | £9.47 | 2 days | |
| DOR-A1257/64X160 | 7/64 | 100 | 160 | 2.78 | £14.50 | 2 days | |
| DOR-A1253.0X160 | 3.00 | 100 | 160 | 3 | £9.17 | 2 days | |
| DOR-A1253.0X200 | 3.00 | 150 | 200 | 3 | £12.25 | 2 days | |
| DOR-A1253.0X250 | 3.00 | 200 | 250 | 3 | £15.53 | 2 days | |
| DOR-A1251/8X160 | 1/8 | 100 | 160 | 3.18 | £11.26 | 2 days | |
| DOR-A1251/8X200 | 1/8 | 150 | 200 | 3.18 | £11.45 | 2 days | |
| DOR-A1251/8X250 | 1/8 | 200 | 250 | 3.18 | £22.28 | 2 days | |
| DOR-A1251/8X315 | 1/8 | 250 | 310 | 3.18 | £25.63 | 2 days | |
| DOR-A1253.3X160 | 3.30 | 100 | 160 | 3.3 | £13.22 | 2 days | |
| DOR-A1253.5X160 | 3.50 | 100 | 160 | 3.5 | £9.30 | 2 days | |
| DOR-A1253.5X200 | 3.50 | 150 | 200 | 3.5 | £11.48 | 2 days | |
| DOR-A1253.5X250 | 3.50 | 200 | 250 | 3.5 | £16.17 | 2 days | |
| DOR-A1259/64X160 | 9/64 | 100 | 160 | 3.57 | £16.32 | 2 days | |
| DOR-A1259/64X200 | 9/64 | 150 | 200 | 3.57 | £16.42 | 2 days | |
| DOR-A1259/64X315 | 9/64 | 250 | 310 | 3.57 | £23.76 | 2 days | |
| DOR-A1255/32X160 | 5/32 | 100 | 160 | 3.97 | £11.43 | 2 days | |
| DOR-A1255/32X200 | 5/32 | 150 | 200 | 3.97 | £13.53 | 2 days | |
| DOR-A1255/32X250 | 5/32 | 200 | 250 | 3.97 | £26.08 | 2 days | |
| DOR-A1255/32X315 | 5/32 | 250 | 310 | 3.97 | £33.11 | 2 days | |
| DOR-A1254.0X160 | 4.00 | 100 | 160 | 4 | £9.33 | 2 days | |
| DOR-A1254.0X200 | 4.00 | 150 | 200 | 4 | £12.04 | 2 days | |
| DOR-A1254.0X250 Viewing | 4.00 | 200 | 250 | 4 | £16.13 | 2 days | |
| DOR-A1254.0X315 | 4.00 | 250 | 310 | 4 | £20.00 | 2 days | |
| DOR-A12511/64X160 | 11/64 | 100 | 160 | 4.37 | £15.03 | 2 days | |
| DOR-A12511/64X200 | 11/64 | 150 | 200 | 4.37 | £18.10 | 2 days | |
| DOR-A12511/64X315 | 11/64 | 250 | 310 | 4.37 | £26.08 | 2 days | |
| DOR-A1254.5X160 | 4.50 | 100 | 160 | 4.5 | £10.84 | 2 days | |
| DOR-A1254.5X200 | 4.50 | 150 | 200 | 4.5 | £14.21 | 2 days | |
| DOR-A1254.5X250 | 4.50 | 200 | 250 | 4.5 | £21.78 | 2 days | |
| DOR-A1254.5X315 | 4.50 | 250 | 310 | 4.5 | £23.80 | 2 days | |
| DOR-A1253/16X160 | 3/16 | 100 | 160 | 4.76 | £10.99 | 2 days | |
| DOR-A1253/16X200 | 3/16 | 150 | 200 | 4.76 | £12.52 | 2 days | |
| DOR-A1253/16X250 | 3/16 | 200 | 250 | 4.76 | £15.94 | 2 days | |
| DOR-A1253/16X315 | 3/16 | 250 | 310 | 4.76 | £23.30 | 2 days | |
| DOR-A1253/16X400 | 3/16 | 300 | 400 | 4.76 | £44.05 | 2 days | |
| DOR-A1255.0X160 | 5.00 | 100 | 160 | 5 | £10.53 | 2 days | |
| DOR-A1255.0X200 | 5.00 | 150 | 200 | 5 | £13.86 | 2 days | |
| DOR-A1255.0X250 | 5.00 | 200 | 250 | 5 | £17.24 | 2 days | |
| DOR-A1255.0X315 | 5.00 | 250 | 310 | 5 | £23.89 | 2 days | |
| DOR-A1255.0X400 | 5.00 | 300 | 400 | 5 | £30.42 | 2 days | |
| DOR-A12513/64X200 | 13/64 | 150 | 200 | 5.16 | £21.57 | 2 days | |
| DOR-A12513/64X250 | 13/64 | 200 | 250 | 5.16 | £27.95 | 2 days | |
| DOR-A12513/64X315 | 13/64 | 250 | 310 | 5.16 | £36.71 | 2 days | |
| DOR-A1255.5X200 | 5.50 | 150 | 200 | 5.5 | £12.84 | 2 days | |
| DOR-A1255.5X250 | 5.50 | 200 | 250 | 5.5 | £20.75 | 2 days | |
| DOR-A1255.5X315 | 5.50 | 250 | 310 | 5.5 | £32.83 | 2 days | |
| DOR-A1257/32X200 | 7/32 | 150 | 200 | 5.56 | £16.69 | 2 days | |
| DOR-A1257/32X250 | 7/32 | 200 | 250 | 5.56 | £21.33 | 2 days | |
| DOR-A12515/64X200 | 15/64 | 150 | 200 | 5.95 | £25.86 | 2 days | |
| DOR-A12515/64X315 | 15/64 | 250 | 310 | 5.95 | £24.81 | 2 days | |
| DOR-A1256.0X200 | 6.00 | 150 | 200 | 6 | £14.91 | 2 days | |
| DOR-A1256.0X250 | 6.00 | 200 | 250 | 6 | £19.96 | 2 days | |
| DOR-A1256.0X315 | 6.00 | 250 | 310 | 6 | £24.85 | 2 days | |
| DOR-A1256.0X400 | 6.00 | 300 | 400 | 6 | £36.16 | 2 days | |
| DOR-A1251/4X200 | 1/4 | 150 | 200 | 6.35 | £16.32 | 2 days | |
| DOR-A1251/4X250 | 1/4 | 200 | 250 | 6.35 | £20.69 | 2 days | |
| DOR-A1251/4X315 | 1/4 | 250 | 310 | 6.35 | £25.63 | 2 days | |
| DOR-A1251/4X400 | 1/4 | 300 | 400 | 6.35 | £52.44 | 2 days | |
| DOR-A1251/4X500 | 1/4 | 400 | 460 | 6.35 | £72.96 | 2 days | |
| DOR-A1256.5X200 | 6.50 | 150 | 200 | 6.5 | £17.10 | 2 days | |
| DOR-A1256.5X250 | 6.50 | 200 | 250 | 6.5 | £21.20 | 2 days | |
| DOR-A1256.5X315 | 6.50 | 250 | 310 | 6.5 | £30.64 | 2 days | |
| DOR-A12517/64X200 | 17/64 | 150 | 200 | 6.75 | £21.11 | 2 days | |
| DOR-A12517/64X250 | 17/64 | 200 | 250 | 6.75 | £28.41 | 2 days | |
| DOR-A12517/64X500 | 17/64 | 400 | 460 | 6.75 | £72.96 | 2 days | |
| DOR-A1257.0X200 | 7.00 | 150 | 200 | 7 | £18.45 | 2 days | |
| DOR-A1257.0X250 | 7.00 | 200 | 250 | 7 | £23.58 | 2 days | |
| DOR-A1257.0X315 | 7.00 | 250 | 310 | 7 | £33.24 | 2 days | |
| DOR-A1257.5X200 | 7.50 | 150 | 200 | 7.5 | £22.12 | 2 days | |
| DOR-A1257.5X250 | 7.50 | 200 | 250 | 7.5 | £26.68 | 2 days | |
| DOR-A1257.5X315 | 7.50 | 250 | 310 | 7.5 | £34.56 | 2 days | |
| DOR-A1255/16X200 | 5/16 | 150 | 200 | 7.94 | £20.93 | 2 days | |
| DOR-A1255/16X250 | 5/16 | 200 | 250 | 7.94 | £26.36 | 2 days | |
| DOR-A1255/16X315 | 5/16 | 250 | 310 | 7.94 | £34.88 | 2 days | |
| DOR-A1255/16X500 | 5/16 | 400 | 460 | 7.94 | £86.18 | 2 days | |
| DOR-A1258.0X250 | 8.00 | 200 | 250 | 8 | £26.04 | 2 days | |
| DOR-A1258.0X315 | 8.00 | 250 | 310 | 8 | £35.07 | 2 days | |
| DOR-A1258.0X400 | 8.00 | 300 | 400 | 8 | £44.23 | 2 days | |
| DOR-A12521/64X315 | 21/64 | 250 | 310 | 8.33 | £64.30 | 2 days | |
| DOR-A1258.5X250 | 8.50 | 200 | 250 | 8.5 | £35.66 | 2 days | |
| DOR-A1258.5X315 | 8.50 | 250 | 310 | 8.5 | £47.88 | 2 days | |
| DOR-A12511/32X250 | 11/32 | 200 | 250 | 8.73 | £34.06 | 2 days | |
| DOR-A12511/32X315 | 11/32 | 250 | 310 | 8.73 | £58.37 | 2 days | |
| DOR-A12511/32X400 | 11/32 | 300 | 400 | 8.73 | £72.05 | 2 days | |
| DOR-A12511/32X500 | 11/32 | 400 | 460 | 8.73 | £86.18 | 2 days | |
| DOR-A1259.0X250 | 9.00 | 200 | 250 | 9 | £30.87 | 2 days | |
| DOR-A1259.0X315 | 9.00 | 250 | 310 | 9 | £39.31 | 2 days | |
| DOR-A1259.0X400 | 9.00 | 300 | 400 | 9 | £56.54 | 2 days | |
| DOR-A1259.5X250 | 9.50 | 200 | 250 | 9.5 | £36.98 | 2 days | |
| DOR-A1259.5X315 | 9.50 | 250 | 310 | 9.5 | £49.70 | 2 days | |
| DOR-A1253/8X250 | 3/8 | 200 | 250 | 9.52 | £33.61 | 2 days | |
| DOR-A1253/8X315 | 3/8 | 250 | 310 | 9.52 | £42.59 | 2 days | |
| DOR-A1253/8X400 | 3/8 | 300 | 400 | 9.52 | £53.81 | 2 days | |
| DOR-A1253/8X500 | 3/8 | 400 | 460 | 9.52 | £74.33 | 2 days | |
| DOR-A12510.0X250 | 10.00 | 200 | 250 | 10 | £35.52 | 2 days | |
| DOR-A12510.0X315 | 10.00 | 250 | 310 | 10 | £44.19 | 2 days | |
| DOR-A12510.0X400 | 10.00 | 300 | 400 | 10 | £65.21 | 2 days | |
| DOR-A12513/32X250 | 13/32 | 200 | 250 | 10.32 | £44.32 | 2 days | |
| DOR-A12513/32X315 | 13/32 | 250 | 310 | 10.32 | £54.72 | 2 days | |
| DOR-A12510.5X250 | 10.50 | 200 | 250 | 10.5 | £44.28 | 2 days | |
| DOR-A12510.5X315 | 10.50 | 250 | 310 | 10.5 | £57.46 | 2 days | |
| DOR-A12510.5X400 | 10.50 | 300 | 400 | 10.5 | £68.86 | 2 days | |
| DOR-A12511.0X250 | 11.00 | 200 | 250 | 11 | £40.04 | 2 days | |
| DOR-A12511.0X315 | 11.00 | 250 | 310 | 11 | £51.07 | 2 days | |
| DOR-A12511.0X400 | 11.00 | 300 | 400 | 11 | £63.38 | 2 days | |
| DOR-A1257/16X250 | 7/16 | 200 | 250 | 11.11 | £49.25 | 2 days | |
| DOR-A1257/16X315 | 7/16 | 250 | 310 | 11.11 | £62.02 | 2 days | |
| DOR-A1257/16X400 | 7/16 | 300 | 400 | 11.11 | £129.05 | 2 days | |
| DOR-A12529/64X315 | 29/64 | 250 | 310 | 11.51 | £57.46 | 2 days | |
| DOR-A12512.0X250 | 12.00 | 200 | 250 | 12 | £46.97 | 2 days | |
| DOR-A12512.0X315 | 12.00 | 250 | 310 | 12 | £54.72 | 2 days | |
| DOR-A12512.0X400 | 12.00 | 300 | 400 | 12 | £73.42 | 2 days | |
| DOR-A12531/64X315 | 31/64 | 250 | 310 | 12.3 | £57.46 | 2 days | |
| DOR-A1251/2X250 | 1/2 | 200 | 250 | 12.7 | £57.00 | 2 days | |
| DOR-A1251/2X315 | 1/2 | 250 | 310 | 12.7 | £72.96 | 2 days | |
| DOR-A1251/2X400 | 1/2 | 300 | 400 | 12.7 | £95.76 | 2 days | |
| DOR-A12513.0X315 | 13.00 | 250 | 310 | 13 | £58.37 | 2 days | |
| DOR-A12513.0X400 | 13.00 | 300 | 400 | 13 | £74.33 | 2 days | |
| DOR-A12517/32X315 | 17/32 | 250 | 310 | 13.49 | £58.37 | 2 days | |
| DOR-A12514.0X315 | 14.00 | 250 | 310 | 14 | £69.31 | 2 days | |
| DOR-A12514.0X400 | 14.00 | 300 | 400 | 14 | £81.17 | 2 days | |
| DOR-A1259/16X315 | 9/16 | 250 | 310 | 14.29 | £69.31 | 2 days | |
| DOR-A12537/64X315 | 37/64 | 250 | 310 | 14.68 | £69.31 | 2 days | |
| DOR-A12519/32X315 | 19/32 | 250 | 310 | 15.08 | £69.31 | 2 days | |
| DOR-A12519/32X500 | 19/32 | 400 | 460 | 15.08 | £93.02 | 2 days | |
| DOR-A1255/8X315 | 5/8 | 250 | 310 | 15.88 | £69.31 | 2 days | |
| DOR-A1255/8X500 | 5/8 | 400 | 460 | 15.88 | £93.02 | 2 days | |
| DOR-A12511/16X315 | 11/16 | 250 | 310 | 17.46 | £69.31 | 2 days | |
| DOR-A1253/4X315 | 3/4 | 250 | 310 | 19.05 | £70.68 | 2 days | |
| DOR-A1253/4X500 | 3/4 | 400 | 460 | 19.05 | £95.30 | 2 days |
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