Dormer Pramet A125 15/64 Inch x 310 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

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Dormer Pramet A125 15/64 Inch x 310 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

Name: Dormer Pramet A125 15/64 Inch x 310 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328
Brand: Dormer Pramet
SKU: DOR-A12515/64X315
Price: 26.27 GBP
Availability: InStock

SKU:DOR-A12515/64X315

Introducing the Dormer Pramet A125 15/64 Inch x 310 mm HSS ST Straight Shank Extra Long Series Drill BS 328—a purpose-built drill bit engineered for deep-hole reliability and precise metalworking ... Read more ↓

Material Compatibility

Specifications at a glance

Type	Extra Long Series
Drill Diameter	15/64
Flute Length	250
Overall Length	310

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£26.27

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

Key features tailored for professional use:

118° conventional point delivers a strong, self-centering entry and is straightforward to re-grind, preserving cutting efficiency through repeated use.
Steam oxide finish minimizes built-up edge and material sticking at the cutting edge, promoting cleaner holes and easier chip evacuation.
Extra-long length (310 mm) provides extended reach for drilling deep holes, through thick sections, or pockets with limited access—without sacrificing hole accuracy.
Premium HSS material stands up to steel, aluminium, stainless steel, and a range of alloys, delivering dependable performance across common machining tasks.
Straight shank design ensures compatibility with a wide array of chucks and drilling machines, delivering stable cuts and consistent hole alignment.
BS 328 specification confirms standard tooling compatibility, making it a reliable choice for shop inventories and project pipelines.

This drill bit shines in settings like fabrication shops, automotive maintenance, and metalworking environments where depth and reach matter. Use cases include drilling deep pilot holes before tapping, creating through-holes in thick components, and bypassing obstacles that shorter bits can’t reach—while maintaining clean edge quality and accurate hole geometry.

Performance tips for best results:

Match speed and feed to the material; for steel, begin with conservative speeds and adjust based on chip formation and finish.
Apply cutting fluid or lubricant to extend tool life and improve surface finish in harder materials.
Prefer drill presses for vertical alignment to maximize straightness when using the extra-long reach.
If necessary, start with a small pilot hole to reduce potential deflection on long reach drilling.

Part Numbers

Protool Part Number: DOR-A12515/64X315
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-A12515/64X315. 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	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 Viewing	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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