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Dormer Pramet A777 8.50 mm HSS-E STRAIGHT SHANK JOBBER DRILL DIN 338
SKU:DOR-A7778.5
The Dormer Pramet A777 8.50 mm HSS-E Straight Shank Jobber Drill (DIN 338) is a versatile metalworking tool engineered for reliable, precise hole-making. Designed for a wide audience—from enginee...
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Material Compatibility
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Specification
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| Type | Jobber Drill |
| Drill Diameter | 8.50 |
| Flute Length | 75 |
| Overall Length | 117 |
| Shank Diameter | 8.5 |
| Substrate | HSS-E |
£14.04
Prices shown ex. VAT
2 days estimated lead time
— subject to availability
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Free delivery over £50 ex VAT
Secure checkout
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
The Dormer Pramet A777 8.50 mm HSS-E Straight Shank Jobber Drill (DIN 338) is a versatile metalworking tool engineered for reliable, precise hole-making. Designed for a wide audience—from engineers and buyers to tradespeople and hobbyists—it delivers clean, accurate holes with consistent performance across a range of materials. The 8.50 mm diameter and straight shank fit standard drill chucks, making it a dependable choice for everyday machining tasks. Its 135° split point helps start holes exactly on center with less push force, reducing wandering and improving first-pass accuracy.
- 135° split point for self-centering: starts holes where you aim, minimizes wandering, and reduces the effort required to begin drilling for quicker, more accurate results.
- HSS-E cobalt (HSCO) alloy for versatility: built to cut a wide range of materials—from steel to aluminium and stainless steel—with long edge life and reliable performance in challenging jobs.
- Bronze oxide finish with heavy-duty design: helps prevent material from sticking to the cutting edge and delivers durable, sustained cutting performance in demanding applications.
This combination gives you dependable hole quality, extended tool life, and smoother operation across multiple metals. The A777 drill supports efficient workflows, reduces rework, and enhances overall drilling results in professional shops and home garages alike.
| Type | Jobber Drill |
| Drill Diameter | 8.50 |
| Flute Length | 75 |
| Overall Length | 117 |
| Shank Diameter | 8.5 |
| Substrate | HSS-E |
| Coated | No |
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 interested in providing a good service making us the customer feel valued.
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honest about stock and prices are competitive.
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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 A777 HSS-E STRAIGHT SHANK JOBBER DRILLS DIN 338
View full collection →You are viewing DOR-A7778.5. Click any other SKU to view its full details.
| Product SKU | Drill Diameter | Flute Length | Overall Length | Shank Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|
| DOR-A777.3 | 0.30 | 3 | 19 | 0.3 | £9.38 | 2 days | |
| DOR-A777.35 | 0.35 | 4 | 19 | 0.35 | £8.42 | 2 days | |
| DOR-A777.4 | 0.40 | 5 | 20 | 0.4 | £7.83 | 2 days | |
| DOR-A777.45 | 0.45 | 5 | 20 | 0.45 | £7.30 | 2 days | |
| DOR-A777.5 | 0.50 | 6 | 22 | 0.5 | £6.11 | 2 days | |
| DOR-A777.55 | 0.55 | 7 | 24 | 0.55 | £7.83 | 2 days | |
| DOR-A777.6 | 0.60 | 7 | 24 | 0.6 | £6.48 | 2 days | |
| DOR-A777.65 | 0.65 | 8 | 26 | 0.65 | £7.30 | 2 days | |
| DOR-A777.7 | 0.70 | 9 | 28 | 0.7 | £5.84 | 2 days | |
| DOR-A777.8 | 0.80 | 10 | 30 | 0.8 | £5.20 | 2 days | |
| DOR-A777.9 | 0.90 | 11 | 32 | 0.9 | £5.43 | 2 days | |
| DOR-A777.95 | 0.95 | 11 | 32 | 0.95 | £5.70 | 2 days | |
| DOR-A7771.0 | 1.00 | 12 | 34 | 1 | £4.36 | 2 days | |
| DOR-A7771.1 | 1.10 | 14 | 36 | 1.1 | £4.59 | 2 days | |
| DOR-A7771.2 | 1.20 | 16 | 38 | 1.2 | £4.59 | 2 days | |
| DOR-A7771.3 | 1.30 | 16 | 38 | 1.3 | £4.36 | 2 days | |
| DOR-A7771.4 | 1.40 | 18 | 40 | 1.4 | £4.20 | 2 days | |
| DOR-A7771.5 | 1.50 | 18 | 40 | 1.5 | £3.85 | 2 days | |
| DOR-A7771/16 | 1/16 | 20 | 43 | 1.59 | £3.68 | 2 days | |
| DOR-A7771.6 | 1.60 | 20 | 43 | 1.6 | £3.68 | 2 days | |
| DOR-A7771.7 | 1.70 | 20 | 43 | 1.7 | £3.98 | 2 days | |
| DOR-A7771.8 | 1.80 | 22 | 46 | 1.8 | £3.91 | 2 days | |
| DOR-A7771.9 | 1.90 | 22 | 46 | 1.9 | £3.85 | 2 days | |
| DOR-A7775/64 | 5/64 | 24 | 49 | 1.98 | £3.98 | 2 days | |
| DOR-A7772.0 | 2.00 | 24 | 49 | 2 | £3.12 | 2 days | |
| DOR-A7772.1 | 2.10 | 24 | 49 | 2.1 | £3.68 | 2 days | |
| DOR-A7772.2 | 2.20 | 27 | 53 | 2.2 | £3.78 | 2 days | |
| DOR-A7772.3 | 2.30 | 27 | 53 | 2.3 | £3.78 | 2 days | |
| DOR-A7773/32 | 3/32 | 30 | 57 | 2.38 | £3.53 | 2 days | |
| DOR-A7772.4 | 2.40 | 30 | 57 | 2.4 | £3.78 | 2 days | |
| DOR-A7772.5 | 2.50 | 30 | 57 | 2.5 | £3.53 | 2 days | |
| DOR-A7772.6 | 2.60 | 30 | 57 | 2.6 | £3.91 | 2 days | |
| DOR-A7772.7 | 2.70 | 33 | 61 | 2.7 | £3.98 | 2 days | |
| DOR-A7777/64 | 7/64 | 33 | 61 | 2.78 | £3.91 | 2 days | |
| DOR-A7772.8 | 2.80 | 33 | 61 | 2.8 | £3.91 | 2 days | |
| DOR-A7772.9 | 2.90 | 33 | 61 | 2.9 | £3.78 | 2 days | |
| DOR-A7773.0 | 3.00 | 33 | 61 | 3 | £3.53 | 2 days | |
| DOR-A7773.1 | 3.10 | 36 | 65 | 3.1 | £4.12 | 2 days | |
| DOR-A7771/8 | 1/8 | 36 | 65 | 3.18 | £3.53 | 2 days | |
| DOR-A7773.2 | 3.20 | 36 | 65 | 3.2 | £4.06 | 2 days | |
| DOR-A7773.3 | 3.30 | 36 | 65 | 3.3 | £3.68 | 2 days | |
| DOR-A7773.4 | 3.40 | 39 | 70 | 3.4 | £4.20 | 2 days | |
| DOR-A7773.5 | 3.50 | 39 | 70 | 3.5 | £4.30 | 2 days | |
| DOR-A7779/64 | 9/64 | 39 | 70 | 3.57 | £4.50 | 2 days | |
| DOR-A7773.6 | 3.60 | 39 | 70 | 3.6 | £4.50 | 2 days | |
| DOR-A7773.7 | 3.70 | 39 | 70 | 3.7 | £4.30 | 2 days | |
| DOR-A7773.8 | 3.80 | 43 | 75 | 3.8 | £5.05 | 2 days | |
| DOR-A7773.9 | 3.90 | 43 | 75 | 3.9 | £5.05 | 2 days | |
| DOR-A7775/32 | 5/32 | 43 | 75 | 3.97 | £4.59 | 2 days | |
| DOR-A7774.0 | 4.00 | 43 | 75 | 4 | £4.59 | 2 days | |
| DOR-A7774.1 | 4.10 | 43 | 75 | 4.1 | £5.05 | 2 days | |
| DOR-A7774.2 | 4.20 | 43 | 75 | 4.2 | £4.79 | 2 days | |
| DOR-A7774.3 | 4.30 | 47 | 80 | 4.3 | £5.70 | 2 days | |
| DOR-A77711/64 | 11/64 | 47 | 80 | 4.37 | £5.43 | 2 days | |
| DOR-A7774.4 | 4.40 | 47 | 80 | 4.4 | £5.43 | 2 days | |
| DOR-A7774.5 | 4.50 | 47 | 80 | 4.5 | £5.43 | 2 days | |
| DOR-A7774.6 | 4.60 | 47 | 80 | 4.6 | £5.70 | 2 days | |
| DOR-A7774.7 | 4.70 | 47 | 80 | 4.7 | £5.64 | 2 days | |
| DOR-A7773/16 | 3/16 | 52 | 86 | 4.76 | £5.05 | 2 days | |
| DOR-A7774.8 | 4.80 | 52 | 86 | 4.8 | £5.91 | 2 days | |
| DOR-A7774.9 | 4.90 | 52 | 86 | 4.9 | £5.78 | 2 days | |
| DOR-A7775.0 | 5.00 | 52 | 86 | 5 | £5.70 | 2 days | |
| DOR-A7775.1 | 5.10 | 52 | 86 | 5.1 | £6.48 | 2 days | |
| DOR-A77713/64 | 13/64 | 52 | 86 | 5.16 | £6.55 | 2 days | |
| DOR-A7775.2 | 5.20 | 52 | 86 | 5.2 | £6.66 | 2 days | |
| DOR-A7775.3 | 5.30 | 52 | 86 | 5.3 | £6.73 | 2 days | |
| DOR-A7775.4 | 5.40 | 57 | 93 | 5.4 | £7.20 | 2 days | |
| DOR-A7775.5 | 5.50 | 57 | 93 | 5.5 | £7.52 | 2 days | |
| DOR-A7777/32 | 7/32 | 57 | 93 | 5.56 | £6.23 | 2 days | |
| DOR-A7775.6 | 5.60 | 57 | 93 | 5.6 | £7.98 | 2 days | |
| DOR-A7775.7 | 5.70 | 57 | 93 | 5.7 | £8.21 | 2 days | |
| DOR-A7775.8 | 5.80 | 57 | 93 | 5.8 | £8.21 | 2 days | |
| DOR-A7775.9 | 5.90 | 57 | 93 | 5.9 | £8.16 | 2 days | |
| DOR-A77715/64 | 15/64 | 57 | 93 | 5.95 | £8.60 | 2 days | |
| DOR-A7776.0 | 6.00 | 57 | 93 | 6 | £7.37 | 2 days | |
| DOR-A7776.1 | 6.10 | 63 | 101 | 6.1 | £8.60 | 2 days | |
| DOR-A7776.2 | 6.20 | 63 | 101 | 6.2 | £8.60 | 2 days | |
| DOR-A7776.3 | 6.30 | 63 | 101 | 6.3 | £8.66 | 2 days | |
| DOR-A7771/4 | 1/4 | 63 | 101 | 6.35 | £8.10 | 2 days | |
| DOR-A7776.4 | 6.40 | 63 | 101 | 6.4 | £8.80 | 2 days | |
| DOR-A7776.5 | 6.50 | 63 | 101 | 6.5 | £9.20 | 2 days | |
| DOR-A7776.6 | 6.60 | 63 | 101 | 6.6 | £9.67 | 2 days | |
| DOR-A7776.7 | 6.70 | 63 | 101 | 6.7 | £9.94 | 2 days | |
| DOR-A77717/64 | 17/64 | 69 | 109 | 6.75 | £9.94 | 2 days | |
| DOR-A7776.8 | 6.80 | 69 | 109 | 6.8 | £9.94 | 2 days | |
| DOR-A7776.9 | 6.90 | 69 | 109 | 6.9 | £11.04 | 2 days | |
| DOR-A7777.0 | 7.00 | 69 | 109 | 7 | £10.52 | 2 days | |
| DOR-A7777.1 | 7.10 | 69 | 109 | 7.1 | £11.43 | 2 days | |
| DOR-A7779/32 | 9/32 | 69 | 109 | 7.14 | £11.04 | 2 days | |
| DOR-A7777.2 | 7.20 | 69 | 109 | 7.2 | £10.93 | 2 days | |
| DOR-A7777.3 | 7.30 | 69 | 109 | 7.3 | £11.17 | 2 days | |
| DOR-A7777.4 | 7.40 | 69 | 109 | 7.4 | £12.25 | 2 days | |
| DOR-A7777.5 | 7.50 | 69 | 109 | 7.5 | £11.17 | 2 days | |
| DOR-A77719/64 | 19/64 | 75 | 117 | 7.54 | £12.62 | 2 days | |
| DOR-A7777.6 | 7.60 | 75 | 117 | 7.6 | £12.71 | 2 days | |
| DOR-A7777.7 | 7.70 | 75 | 117 | 7.7 | £12.62 | 2 days | |
| DOR-A7777.8 | 7.80 | 75 | 117 | 7.8 | £13.21 | 2 days | |
| DOR-A7777.9 | 7.90 | 75 | 117 | 7.9 | £13.45 | 2 days | |
| DOR-A7775/16 | 5/16 | 75 | 117 | 7.94 | £12.18 | 2 days | |
| DOR-A7778.0 | 8.00 | 75 | 117 | 8 | £12.34 | 2 days | |
| DOR-A7778.1 | 8.10 | 75 | 117 | 8.1 | £14.14 | 2 days | |
| DOR-A7778.2 | 8.20 | 75 | 117 | 8.2 | £13.54 | 2 days | |
| DOR-A7778.3 | 8.30 | 75 | 117 | 8.3 | £13.82 | 2 days | |
| DOR-A77721/64 | 21/64 | 75 | 117 | 8.33 | £16.51 | 2 days | |
| DOR-A7778.4 | 8.40 | 75 | 117 | 8.4 | £14.50 | 2 days | |
| DOR-A7778.5 Viewing | 8.50 | 75 | 117 | 8.5 | £14.04 | 2 days | |
| DOR-A7778.6 | 8.60 | 81 | 125 | 8.6 | £16.67 | 2 days | |
| DOR-A7778.7 | 8.70 | 81 | 125 | 8.7 | £17.13 | 2 days | |
| DOR-A77711/32 | 13/32 | 81 | 125 | 8.73 | £13.62 | 2 days | |
| DOR-A7778.8 | 8.80 | 81 | 125 | 8.8 | £16.51 | 2 days | |
| DOR-A7778.9 | 8.90 | 81 | 125 | 8.9 | £17.65 | 2 days | |
| DOR-A7779.0 | 9.00 | 81 | 125 | 9 | £16.31 | 2 days | |
| DOR-A7779.1 | 9.10 | 81 | 125 | 9.1 | £17.65 | 2 days | |
| DOR-A77723/64 | 23/64 | 81 | 125 | 9.13 | £18.04 | 2 days | |
| DOR-A7779.2 | 9.20 | 81 | 125 | 9.2 | £18.77 | 2 days | |
| DOR-A7779.3 | 9.30 | 81 | 125 | 9.3 | £18.09 | 2 days | |
| DOR-A7779.4 | 9.40 | 81 | 125 | 9.4 | £18.88 | 2 days | |
| DOR-A7779.5 | 9.50 | 81 | 125 | 9.5 | £17.72 | 2 days | |
| DOR-A7773/8 | 3/8 | 87 | 133 | 9.52 | £17.72 | 2 days | |
| DOR-A7779.6 | 9.60 | 87 | 133 | 9.6 | £19.46 | 2 days | |
| DOR-A7779.7 | 9.70 | 87 | 133 | 9.7 | £20.23 | 2 days | |
| DOR-A7779.8 | 9.80 | 87 | 133 | 9.8 | £20.46 | 2 days | |
| DOR-A7779.9 | 9.90 | 87 | 133 | 9.9 | £20.93 | 2 days | |
| DOR-A77725/64 | 25/64 | 87 | 133 | 9.92 | £22.15 | 2 days | |
| DOR-A77710.0 | 10.00 | 87 | 133 | 10 | £19.36 | 2 days | |
| DOR-A77710.1 | 10.10 | 87 | 133 | 10.1 | £25.49 | 2 days | |
| DOR-A77710.2 | 10.20 | 87 | 133 | 10.2 | £24.67 | 2 days | |
| DOR-A77713/32 | 13/32 | 87 | 133 | 10.32 | £21.05 | 2 days | |
| DOR-A77710.5 | 10.50 | 87 | 133 | 10.5 | £24.99 | 2 days | |
| DOR-A77727/64 | 27/64 | 94 | 142 | 10.72 | £25.49 | 2 days | |
| DOR-A77710.8 | 10.80 | 94 | 142 | 10.8 | £30.64 | 2 days | |
| DOR-A77711.0 | 11.00 | 94 | 142 | 11 | £28.73 | 2 days | |
| DOR-A7777/16 | 7/16 | 94 | 142 | 11.11 | £22.57 | 2 days | |
| DOR-A77711.2 | 11.20 | 94 | 142 | 11.2 | £34.61 | 2 days | |
| DOR-A77711.5 | 11.50 | 94 | 142 | 11.5 | £30.64 | 2 days | |
| DOR-A77729/64 | 29/64 | 94 | 142 | 11.51 | £29.23 | 2 days | |
| DOR-A77711.8 | 11.80 | 94 | 142 | 11.8 | £38.67 | 2 days | |
| DOR-A77715/32 | 15/32 | 101 | 151 | 11.91 | £32.15 | 2 days | |
| DOR-A77712.0 | 12.00 | 101 | 151 | 12 | £33.38 | 2 days | |
| DOR-A77712.2 | 12.20 | 101 | 151 | 12.2 | £46.51 | 2 days | |
| DOR-A77731/64 | 31/64 | 101 | 151 | 12.3 | £38.35 | 2 days | |
| DOR-A77712.5 | 12.50 | 101 | 151 | 12.5 | £36.43 | 2 days | |
| DOR-A7771/2 | 1/2 | 101 | 151 | 12.7 | £37.62 | 2 days | |
| DOR-A77712.8 | 12.80 | 101 | 151 | 12.8 | £51.98 | 2 days | |
| DOR-A77713.0 | 13.00 | 101 | 151 | 13 | £39.67 | 2 days | |
| DOR-A77713.5 | 13.50 | 108 | 160 | 13.5 | £55.18 | 2 days | |
| DOR-A77714.0 | 14.00 | 108 | 160 | 14 | £56.09 | 2 days | |
| DOR-A77714.5 | 14.50 | 114 | 169 | 14.5 | £66.58 | 2 days | |
| DOR-A77715.0 | 15.00 | 114 | 169 | 15 | £68.86 | 2 days | |
| DOR-A77715.5 | 15.50 | 120 | 178 | 15.5 | £78.89 | 2 days | |
| DOR-A77716.0 | 16.00 | 120 | 178 | 16 | £81.17 | 2 days |
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