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Robert Charles Plain Shank Counterbore M35-HSS-E 5% Cobalt - #8 Cap Screw Size - 0.179 Pilot Size
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Robert Charles Plain Shank Counterbore M35-HSS-E 5% Cobalt - #8 Cap Screw Size - 0.179 Pilot Size

5770-8-1/64 OVER

Availability: 2-3 Days Estimated lead time, subject to availability

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The Robert Charles Plain Shank Counterbore is manufactured from M35 HSS-E with 5% cobalt, delivering excellent heat resistance, wear life, and cutting performance. Designed for accurate and clea... Read more

Specification Value
Cap Screw Size #8
Pilot Size 0.179
Cutting Diameter 0.288
Shank Size 1/4
Overall Length 3
Steel
Stainless Steel
Cast Iron
Non-Ferrous
Exotics
Hardened Steel

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The Robert Charles Plain Shank Counterbore is manufactured from M35 HSS-E with 5% cobalt, delivering excellent heat resistance, wear life, and cutting performance. Designed for accurate and clean counterboring, the plain shank allows easy fitment in standard tool holders while providing stable, reliable machining. Ideal for precision engineering, automotive, and general workshop applications where durability and consistent results are essential.

What time are Protool open? We are open Monday to Friday between 8:30am and 5pm.

Do you offer Free Next Day delivery? Yes! To mainland UK we offer Free Next Day delivery on all orders above £50 ex vat*.

We also offer the following:

DPD Standard Next Day Delivery - £7.50 (FREE on orders over £100 ex vat*).
DPD Next Day Pre-12pm - £12.50
DPD Next Day Pre-10.30am - £20.00

We also offer Saturday delivery for those that require it, If you order before 4.30 pm on a Friday. Please see our delivery page for more information.

*T’s & C’s and exclusions apply. Please see our delivery page for more information on all our services including those outside of mainland UK (Republic of Ireland, Northern Ireland, Scottish Highlands, Channel Islands etc).

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