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Dormer Pramet A978 8.00 mm HSS-E HIGH PERF MULT-APP STRAIGHT SHANK EXTRA LONG SERIES (3) DRILL DIN 1869 / 3

Dormer Pramet A978 8.00 mm HSS-E HIGH PERF MULT-APP STRAIGHT SHANK EXTRA LONG SERIES (3) DRILL DIN 1869 / 3

SKU:DOR-A9788.0X390

Engineered for demanding metalworking tasks, the Dormer Pramet A978 8.00 mm HSS-E High-Performance Multi-Application Straight Shank Extra-Long Drill (DIN 1869 / 3) is built to deliver dependable p... Read more ↓
P
M
K
N
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TypeExtra Long Series
Drill Diameter8.00
Flute Length265
Overall Length390
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£81.40
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

Engineered for demanding metalworking tasks, the Dormer Pramet A978 8.00 mm HSS-E High-Performance Multi-Application Straight Shank Extra-Long Drill (DIN 1869 / 3) is built to deliver dependable precision and extended reach across a broad range of materials. The extra-long length expands your capability, letting you reach deep into assemblies, molds, or recessed workpieces without compromising rigidity.

  • 130-degree point for self-centering — starts holes accurately and reduces the pushing force required, helping prevent wandering in tough materials.
  • Bright finish — minimizes material from sticking to the cutting edge, promoting cleaner cuts and longer tool life.
  • Parabolic flute design — optimized for deep-hole drilling, enabling efficient chip evacuation and stable penetration in a single pass.
  • Premium HSS-E material — cobalt-enhanced high-speed steel that sustains hardness under heat, suitable for drilling steel, aluminium, and stainless steel with reliable performance.
  • Extra-long length series — ideal for very deep holes and applications where extended reach is essential, from fabrication and aerospace to automotive repairs.
  • Multi-application capability — designed to handle a broad spectrum of metals and non-ferrous materials, reducing tool changes and increasing workflow efficiency.

In real-world use, this drill shines on deep-hole projects, whether you’re threading through stainless steel dashboards, aluminum frames, or thick steel plates with limited access. The combination of a precise 130-degree point and efficient parabolic flutes delivers controlled entry, smooth cutting action, and consistent hole quality—even as workpieces demand prolonged drilling sessions.

Part Numbers

Protool Part Number
DOR-A9788.0X390
Brand
Dormer Pramet
Category
Drill
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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

Not sure if this is the right tool for your job? Ask us about speeds and feeds, material suitability, holders or alternatives — 30+ years of machining experience on the other end.

Prefer to talk? Call 01732 887334 — Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Full Range: Dormer Pramet A978 HSS-E HIGH PERF MULT-APP STRAIGHT SHANK EXTRA LONG SERIES (3) DRILLS DIN 1869 / 3

View full collection →

You are viewing DOR-A9788.0X390. Click any other SKU to view its full details.

Product SKUDrill DiameterFlute LengthOverall LengthShank DiameterPriceStock Order
DOR-A9783.0 3.001602403£24.97 2 days
DOR-A9783.5X265 3.501802653.5£29.21 2 days
DOR-A9784.0X280 4.001902804£30.38 2 days
DOR-A9784.5X295 4.502002954.5£36.07 2 days
DOR-A9785.0X315 5.002103155£38.68 2 days
DOR-A9786.0X330 6.002253306£48.52 2 days
DOR-A9781/4 1/42353506.35£55.33 2 days
DOR-A9786.5X350 6.502353506.5£62.24 2 days
DOR-A9787.0X370 7.002503707£66.50 2 days
DOR-A9788.0X390 Viewing8.002653908£81.40 2 days
DOR-A9788.5X390 8.502653908.5£93.10 2 days
DOR-A9789.0X410 9.002804109£100.02 2 days
DOR-A9789.5X410 9.502804109.5£115.44 2 days
DOR-A97810.0X430 10.0029543010£118.64 2 days

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