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Robert Charles Plain Shank Counterbore M35-HSS-E 5% Cobalt - #6 Cap Screw Size - 0.153 Pilot Size

Robert Charles Plain Shank Counterbore M35-HSS-E 5% Cobalt - #6 Cap Screw Size - 0.153 Pilot Size

SKU:5770-6-1/64 OVER
The Robert Charles Plain Shank Counterbore is a precision cutting tool engineered for durable, clean counterboring in metalworking and automotive workshops. Built for professionals who demand cons... Read more ↓
Material Compatibility
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Specification
Cap Screw Size#6
Pilot Size0.153
Cutting Diameter0.244
Shank Size7/32
Overall Length3
£34.76
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 precision cutting tool engineered for durable, clean counterboring in metalworking and automotive workshops. Built for professionals who demand consistent results, it combines strong performance with easy compatibility in standard setups.

  • Material: M35 HSS-E with 5% cobalt for enhanced heat resistance, wear life, and sustained cutting performance under heavy use.
  • Shank Type: Plain shank design for straightforward fitment in common tool holders, delivering stable, reliable machining.
  • Counterbore Geometry: Precisely ground edges and flute geometry that produce accurate, clean counterbores with repeatable depth control.
  • Pilot Size: 0.153 inch pilot to ensure proper workpiece alignment and a true starting point for the counterbore.
  • Cap Screw Compatibility: Sized for #6 cap screws, aligning with standard fastener practices in automotive and fabrication projects.
  • Applications: Ideal for precision engineering, automotive components, and general workshop tasks where durability and consistent results matter.

With its cobalt-enhanced substrate, the Robert Charles Plain Shank Counterbore maintains edge sharpness longer, reducing tool changes and rework. The sturdy plain shank and robust construction minimize chatter, helping you achieve smooth seating depths and clean, repeatable finishes across multiple jobs. Whether precision-fitting engine components, mounting housings, or preparing fastener recesses, this counterbore delivers dependable performance you can trust project after project.

Cap Screw Size #6
Pilot Size 0.153
Cutting Diameter 0.244
Shank Size 7/32
Overall Length 3

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.

★★★★★
Nice experience staff are very helpful and interested...
Staff are very helpful and interested in providing a good service making us the customer feel valued.
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★★★★★
first place we look
honest about stock and prices are competitive.
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★★★★★
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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 .
Graham
★★★★★
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.
Jeremy

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

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You are viewing 5770-6-1/64 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 Viewing#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 3/40.7811.2033/47£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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