Dormer Pramet A125 4.00 mm x 250 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

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Dormer Pramet A125 4.00 mm x 250 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

Name: Dormer Pramet A125 4.00 mm x 250 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328
Brand: Dormer Pramet
SKU: DOR-A1254.0X250
Price: 17.05 GBP
Availability: InStock

SKU:DOR-A1254.0X250

Material Compatibility

Specifications at a glance

Type	Extra Long Series
Drill Diameter	4.00
Flute Length	200
Overall Length	250

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£17.05

Prices shown ex. VAT

2 days estimated lead time — subject to availability

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01732 887334

Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

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.

Part Numbers

Protool Part Number: DOR-A1254.0X250
Brand: Dormer Pramet
Category: Drill

No downloads are attached to this product yet.
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.

Ask our technical team about this tool

Full Range: Dormer Pramet A125 HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILLS BS 328

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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

DOR-A1251.4X160	1.40	100	160	1.4	£19.93	2 days
DOR-A1251.5X125	1.50	80	125	1.5	£11.35	2 days
DOR-A1251.5X160	1.50	100	160	1.5	£13.45	2 days
DOR-A1251/16X125	1/16	80	125	1.59	£13.82	2 days
DOR-A1251/16X160	1/16	100	160	1.59	£16.54	2 days
DOR-A1251.8X160	1.80	100	160	1.8	£17.40	2 days
DOR-A1255/64X160	5/64	100	160	1.98	£17.08	2 days
DOR-A1255/64X125	5/64	80	125	1.98	£16.37	2 days
DOR-A1252.0X125	2.00	80	125	2	£8.79	2 days
DOR-A1252.0X160	2.00	100	160	2	£10.31	2 days
DOR-A1252.2X160	2.20	100	160	2.2	£10.70	2 days
DOR-A1253/32X160	3/32	100	160	2.38	£10.35	2 days
DOR-A1253/32X125	3/32	80	125	2.38	£9.47	2 days
DOR-A1252.5X125	2.50	80	125	2.5	£8.30	2 days
DOR-A1252.5X160	2.50	100	160	2.5	£10.21	2 days
DOR-A1257/64X125	7/64	80	125	2.78	£10.02	2 days
DOR-A1257/64X160	7/64	100	160	2.78	£15.35	2 days
DOR-A1253.0X160	3.00	100	160	3	£9.70	2 days
DOR-A1253.0X200	3.00	150	200	3	£12.95	2 days
DOR-A1253.0X250	3.00	200	250	3	£16.45	2 days
DOR-A1251/8X160	1/8	100	160	3.18	£11.93	2 days
DOR-A1251/8X200	1/8	150	200	3.18	£12.11	2 days
DOR-A1251/8X250	1/8	200	250	3.18	£23.58	2 days
DOR-A1251/8X315	1/8	250	310	3.18	£27.13	2 days
DOR-A1253.3X160	3.30	100	160	3.3	£13.98	2 days
DOR-A1253.5X160	3.50	100	160	3.5	£9.83	2 days
DOR-A1253.5X200	3.50	150	200	3.5	£12.16	2 days
DOR-A1253.5X250	3.50	200	250	3.5	£17.10	2 days
DOR-A1259/64X160	9/64	100	160	3.57	£17.27	2 days
DOR-A1259/64X200	9/64	150	200	3.57	£17.36	2 days
DOR-A1259/64X315	9/64	250	310	3.57	£25.17	2 days
DOR-A1255/32X160	5/32	100	160	3.97	£12.08	2 days
DOR-A1255/32X200	5/32	150	200	3.97	£14.30	2 days
DOR-A1255/32X250	5/32	200	250	3.97	£27.59	2 days
DOR-A1255/32X315	5/32	250	310	3.97	£35.02	2 days
DOR-A1254.0X160	4.00	100	160	4	£9.85	2 days
DOR-A1254.0X200	4.00	150	200	4	£12.75	2 days
DOR-A1254.0X250 Viewing	4.00	200	250	4	£17.05	2 days
DOR-A1254.0X315	4.00	250	310	4	£21.16	2 days
DOR-A12511/64X160	11/64	100	160	4.37	£15.90	2 days
DOR-A12511/64X200	11/64	150	200	4.37	£19.15	2 days
DOR-A12511/64X315	11/64	250	310	4.37	£27.59	2 days
DOR-A1254.5X160	4.50	100	160	4.5	£11.48	2 days
DOR-A1254.5X200	4.50	150	200	4.5	£15.03	2 days
DOR-A1254.5X250	4.50	200	250	4.5	£23.03	2 days
DOR-A1254.5X315	4.50	250	310	4.5	£25.17	2 days
DOR-A1253/16X160	3/16	100	160	4.76	£11.63	2 days
DOR-A1253/16X200	3/16	150	200	4.76	£13.25	2 days
DOR-A1253/16X250	3/16	200	250	4.76	£16.86	2 days
DOR-A1253/16X315	3/16	250	310	4.76	£24.62	2 days
DOR-A1253/16X400	3/16	300	400	4.76	£46.51	2 days
DOR-A1255.0X160	5.00	100	160	5	£11.16	2 days
DOR-A1255.0X200	5.00	150	200	5	£14.67	2 days
DOR-A1255.0X250	5.00	200	250	5	£18.24	2 days
DOR-A1255.0X315	5.00	250	310	5	£25.26	2 days
DOR-A1255.0X400	5.00	300	400	5	£32.19	2 days
DOR-A12513/64X200	13/64	150	200	5.16	£22.80	2 days
DOR-A12513/64X250	13/64	200	250	5.16	£29.55	2 days
DOR-A12513/64X315	13/64	250	310	5.16	£38.81	2 days
DOR-A1255.5X200	5.50	150	200	5.5	£13.57	2 days
DOR-A1255.5X250	5.50	200	250	5.5	£21.96	2 days
DOR-A1255.5X315	5.50	250	310	5.5	£34.75	2 days
DOR-A1257/32X200	7/32	150	200	5.56	£17.68	2 days
DOR-A1257/32X250	7/32	200	250	5.56	£22.56	2 days
DOR-A12515/64X200	15/64	150	200	5.95	£27.36	2 days
DOR-A12515/64X315	15/64	250	310	5.95	£26.27	2 days
DOR-A1256.0X200	6.00	150	200	6	£15.78	2 days
DOR-A1256.0X250	6.00	200	250	6	£21.11	2 days
DOR-A1256.0X315	6.00	250	310	6	£26.27	2 days
DOR-A1256.0X400	6.00	300	400	6	£38.26	2 days
DOR-A1251/4X200	1/4	150	200	6.35	£17.28	2 days
DOR-A1251/4X250	1/4	200	250	6.35	£21.89	2 days
DOR-A1251/4X315	1/4	250	310	6.35	£27.13	2 days
DOR-A1251/4X400	1/4	300	400	6.35	£55.63	2 days
DOR-A1251/4X500	1/4	400	460	6.35	£77.06	2 days
DOR-A1256.5X200	6.50	150	200	6.5	£18.10	2 days
DOR-A1256.5X250	6.50	200	250	6.5	£22.44	2 days
DOR-A1256.5X315	6.50	250	310	6.5	£32.42	2 days
DOR-A12517/64X200	17/64	150	200	6.75	£22.34	2 days
DOR-A12517/64X250	17/64	200	250	6.75	£30.05	2 days
DOR-A12517/64X500	17/64	400	460	6.75	£77.06	2 days
DOR-A1257.0X200	7.00	150	200	7	£19.52	2 days
DOR-A1257.0X250	7.00	200	250	7	£24.94	2 days
DOR-A1257.0X315	7.00	250	310	7	£35.16	2 days
DOR-A1257.5X200	7.50	150	200	7.5	£23.39	2 days
DOR-A1257.5X250	7.50	200	250	7.5	£28.18	2 days
DOR-A1257.5X315	7.50	250	310	7.5	£36.57	2 days
DOR-A1255/16X200	5/16	150	200	7.94	£22.15	2 days
DOR-A1255/16X250	5/16	200	250	7.94	£27.86	2 days
DOR-A1255/16X315	5/16	250	310	7.94	£36.94	2 days
DOR-A1255/16X500	5/16	400	460	7.94	£91.20	2 days
DOR-A1258.0X250	8.00	200	250	8	£27.54	2 days
DOR-A1258.0X315	8.00	250	310	8	£37.12	2 days
DOR-A1258.0X400	8.00	300	400	8	£46.97	2 days
DOR-A12521/64X315	21/64	250	310	8.33	£68.40	2 days
DOR-A1258.5X250	8.50	200	250	8.5	£37.71	2 days
DOR-A1258.5X315	8.50	250	310	8.5	£50.62	2 days
DOR-A12511/32X250	11/32	200	250	8.73	£36.02	2 days
DOR-A12511/32X315	11/32	250	310	8.73	£61.56	2 days
DOR-A12511/32X400	11/32	300	400	8.73	£76.15	2 days
DOR-A12511/32X500	11/32	400	460	8.73	£91.20	2 days
DOR-A1259.0X250	9.00	200	250	9	£32.65	2 days
DOR-A1259.0X315	9.00	250	310	9	£41.59	2 days
DOR-A1259.0X400	9.00	300	400	9	£59.74	2 days
DOR-A1259.5X250	9.50	200	250	9.5	£39.12	2 days
DOR-A1259.5X315	9.50	250	310	9.5	£52.90	2 days
DOR-A1253/8X250	3/8	200	250	9.52	£35.57	2 days
DOR-A1253/8X315	3/8	250	310	9.52	£45.10	2 days
DOR-A1253/8X400	3/8	300	400	9.52	£57.00	2 days
DOR-A1253/8X500	3/8	400	460	9.52	£78.43	2 days
DOR-A12510.0X250	10.00	200	250	10	£37.57	2 days
DOR-A12510.0X315	10.00	250	310	10	£46.51	2 days
DOR-A12510.0X400	10.00	300	400	10	£68.86	2 days
DOR-A12513/32X250	13/32	200	250	10.32	£46.97	2 days
DOR-A12513/32X315	13/32	250	310	10.32	£57.91	2 days
DOR-A12510.5X250	10.50	200	250	10.5	£46.97	2 days
DOR-A12510.5X315	10.50	250	310	10.5	£60.65	2 days
DOR-A12510.5X400	10.50	300	400	10.5	£72.96	2 days
DOR-A12511.0X250	11.00	200	250	11	£42.36	2 days
DOR-A12511.0X315	11.00	250	310	11	£53.81	2 days
DOR-A12511.0X400	11.00	300	400	11	£67.03	2 days
DOR-A1257/16X250	7/16	200	250	11.11	£51.98	2 days
DOR-A1257/16X315	7/16	250	310	11.11	£65.66	2 days
DOR-A1257/16X400	7/16	300	400	11.11	£136.34	2 days
DOR-A12529/64X315	29/64	250	310	11.51	£60.65	2 days
DOR-A12512.0X250	12.00	200	250	12	£49.70	2 days
DOR-A12512.0X315	12.00	250	310	12	£57.91	2 days
DOR-A12512.0X400	12.00	300	400	12	£77.98	2 days
DOR-A12531/64X315	31/64	250	310	12.3	£60.65	2 days
DOR-A1251/2X250	1/2	200	250	12.7	£60.65	2 days
DOR-A1251/2X315	1/2	250	310	12.7	£77.06	2 days
DOR-A1251/2X400	1/2	300	400	12.7	£101.23	2 days
DOR-A12513.0X315	13.00	250	310	13	£62.02	2 days
DOR-A12513.0X400	13.00	300	400	13	£78.43	2 days
DOR-A12517/32X315	17/32	250	310	13.49	£62.02	2 days
DOR-A12514.0X315	14.00	250	310	14	£72.96	2 days
DOR-A12514.0X400	14.00	300	400	14	£85.73	2 days
DOR-A1259/16X315	9/16	250	310	14.29	£73.42	2 days
DOR-A12537/64X315	37/64	250	310	14.68	£73.42	2 days
DOR-A12519/32X315	19/32	250	310	15.08	£73.42	2 days
DOR-A12519/32X500	19/32	400	460	15.08	£98.50	2 days
DOR-A1255/8X315	5/8	250	310	15.88	£73.42	2 days
DOR-A1255/8X500	5/8	400	460	15.88	£98.50	2 days
DOR-A12511/16X315	11/16	250	310	17.46	£73.42	2 days
DOR-A1253/4X315	3/4	250	310	19.05	£74.78	2 days
DOR-A1253/4X500	3/4	400	460	19.05	£100.78	2 days

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