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Keo #6 to 1/2"+1/32" oversize M35-5% Cobalt Precision Cap Screw Counterbores Set

Your Price: $465.00
In Stock.
Part Number:KC 55241
5 Pcs. Keo Cutters Brand New Made in Great Britain #6, #8, #10, 1/4", 5/16", 3/8", 1/2" +1/32 O/S (oversize) M35-5% Cobalt Precision 3- Flute Cap Screw Counterbores/Kounterbores Set, Integral Pilot, Straight Shank, CNC Precision Ground, Cobalt HSS.


    Precision 3-Flute Cap Screw Kounterbores
  • Integral Pilot, Straight Shank, CNC Precision Ground, Cobalt HSS
  • Micro-smooth CNC precision ground for precision smooth counterboring.
  • M35 Cobalt: HSS, 6% Tungsten, 5% Moly, 5% Cobalt — long tool life in all types of materials.
  • High performance cutting action due to secondary relief behind cutting edge margin.
  • Optimized helix for chip evacuation — chips flow away from cut without wrapping around tool.



Diameter (A)
Diameter (B)
OAL (C)Shank
Diameter (D)
Assembly Criteria
#6 + 1/32 O/S#6.169.26037/321/32" Clearance
#8 + 1/32 O/S#8.195.30431/41/32" Clearance
#10 + 1/32 O/S#10.221.3464.59/321/32" Clearance
1/4" + 1/32 O/S1/4.281.4144.55/161/32" Clearance
5/16" + 1/32 O/S5/16.343.5074.53/81/32" Clearance
3/8" + 1/32 O/S3/8.406.60451/21/32" Clearance
1/2" + 1/32 O/S1/2.531.78961/21/32" Clearance

About Keo Cutters


KEO has been producing the best in performance cutting tools since 1941.Our exceptional quality and service has allowed KEO to become a world leader in the cutting tool industry .Seventy years of commitment to providing the best value is evident in our extensive product offering and our competitive pricing. In today’s global market you need quality, precision and speed – that’s what you get from KEO an American made product and a name you can trust