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Robert Charles Plain Shank Counterbore M35-HSS-E 5% Cobalt - 3/4 Cap Screw Size - 0.781 Pilot Size

Robert Charles Plain Shank Counterbore M35-HSS-E 5% Cobalt - 3/4 Cap Screw Size - 0.781 Pilot Size

SKU:5770-3/4-1/32 OVER
The Robert Charles Plain Shank Counterbore is a high-performance cutting tool designed for precision metalworking. Built for professionals who require clean, accurate counterbores, it combines cob... Read more ↓
Material Compatibility
P
M
K
N
S
H
Specification
Cap Screw Size3/4
Pilot Size0.781
Cutting Diameter1.203
Shank Size3/4
Overall Length7
£211.72
Prices shown ex. VAT
2–3 days estimated lead time — subject to availability
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The Robert Charles Plain Shank Counterbore is a high-performance cutting tool designed for precision metalworking. Built for professionals who require clean, accurate counterbores, it combines cobalt-enhanced steel with a straightforward plain shank for quick, reliable setup.

  • Material: M35-HSS-E with 5% cobalt for excellent heat resistance, extended wear life, and dependable cutting performance.
  • Shank Type: Plain shank for easy mounting in standard tool holders and chucks, enabling fast tool changes.
  • Cap Screw Size: 3/4 inch, providing a robust counterbore capacity for common automotive and precision-engineering parts.
  • Pilot Size: 0.781 inch, ensuring accurate alignment and consistent counterbore depth.
  • Cutting Geometry: Precision-ground edges designed to produce clean, square counterbores with minimal burrs.
  • Applications: Ideal for precision engineering, automotive components, and general workshop projects requiring durable, repeatable results.

Thanks to the cobalt-enhanced HSS-E construction, this counterbore maintains sharpness under demanding cuts, reducing tool downtime and rework. The plain shank simplifies tool changes in everyday setups, while the exact cap screw and pilot sizes deliver repeatable depths and clean finishes. Whether you’re preparing hardened steel surfaces or aluminum workpieces, this counterbore supports consistent tolerances and reliable performance across jobs of varying complexity.

Cap Screw Size 3/4
Pilot Size 0.781
Cutting Diameter 1.203
Shank Size 3/4
Overall Length 7

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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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.
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Full Range: Robert Charles Plain Shank Counterbores M35-HSS-E 5% Cobalt

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You are viewing 5770-3/4-1/32 OVER. Click any other SKU to view its full details.

Product SKUCap Screw SizePilot SizeCutting DiameterShank SizeOverall LengthPriceStock Order
5770-4-CLOSE FIT #40.1120.1865/323£33.97 2-3 days
5770-4-1/64 OVER #40.1270.2025/323£33.97 2-3 days
5770-4-1/32 OVER #40.1430.2175/323£33.97 2-3 days
5770-5-CLOSE FIT #50.1250.2053/163£34.76 2-3 days
5770-5-1/64 OVER #50.1400.2213/163£34.76 2-3 days
5770-5-1/32 OVER #50.1560.2373/163£34.76 2-3 days
5770-6-CLOSE FIT #60.1380.2287/323£34.76 2-3 days
5770-6-1/64 OVER #60.1530.2447/323£34.76 2-3 days
5770-6-1/32 OVER #60.1690.2607/323£34.76 2-3 days
5770-8-CLOSE FIT #80.1640.2721/43£35.55 2-3 days
5770-8-1/64 OVER #80.1790.2881/43£35.55 2-3 days
5770-8-1/32 OVER #80.1950.3041/43£35.55 2-3 days
570-10-CLOSE FIT #100.190.3149/324.5£37.92 2-3 days
5770-10-1/64 OVER #100.2050.339/324.5£37.92 2-3 days
5770-10-1/32 OVER #100.2210.3469/324.5£37.92 2-3 days
5770-1/4-CLOSE FIT 1/40.250.3825/164.5£41.87 2-3 days
5770-1/4-1/64 OVER 1/40.2650.3985/164.5£41.87 2-3 days
5770-1/4-1/32 OVER 1/40.2810.4145/164.5£41.87 2-3 days
5770-5/16-CLOSE FIT 5/160.3120.4753/84.5£47.40 2-3 days
5770-5/16-1/64 OVER 5/160.3280.4913/84.5£47.40 2-3 days
5770-5/16-1/32 OVER 5/160.3430.5073/84.5£47.40 2-3 days
5770-3/8-CLOSE FIT 3/80.3750.5721/25£63.99 2-3 days
5770-3/8-1/64 OVER 3/80.390.5881/25£63.99 2-3 days
5770-3/8-1/32 OVER 3/80.4060.6041/25£63.99 2-3 days
5770-7/16-CLOSE FIT 7/160.4370.6631/25£85.32 2-3 days
5770-7/16-1/64 OVER 7/160.4520.6791/25£85.32 2-3 days
5770-7/16-1/32 OVER 7/160.4680.6951/25£85.32 2-3 days
5770-1/2-CLOSE FIT 1/20.50.7571/26£109.02 2-3 days
5770-1/2-1/64 OVER 1/20.5150.7731/26£109.02 2-3 days
5770-1/2-1/32 OVER 1/20.5310.7891/26£109.02 2-3 days
5770-5/8-1/64 OVER 5/80.6410.9615/86£142.20 2-3 days
5770-5/8-CLOSE FIT 5/80.6250.9455/86£142.20 2-3 days
5770-5/8-1/32 OVER 5/80.6560.9775/86£142.20 2-3 days
5770-3/4-CLOSE FIT 3/40.7661.1873/47£211.72 2-3 days
5770-3/4-1/32 OVER Viewing3/40.7811.2033/47£211.72 2-3 days
5770-7/8-CLOSE FIT 7/80.8911.3757/87£255.96 2-3 days
5770-7/8-1/32 OVER 7/80.9061.3917/87£255.96 2-3 days

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