HSS 7 Piece Metric Cap Screw Counterbore Set
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This high-quality 7-piece HSS Metric Counterbore Set is designed for machining accurate recesses for Socket Head Cap Screws (Allen Head Screws). Ideal for machinists, toolmakers, engineers, maintenance workshops, fabrication shops, and DIY enthusiasts requiring clean, professional counterbored holes.
Manufactured from High Speed Steel (HSS) for excellent wear resistance and long service life when machining steel, stainless steel, aluminium, brass, plastics, and other engineering materials.
Set Includes
Suitable for counterboring the following metric cap screw sizes:
All cutters feature a straight shank design for use in drill presses, milling machines, lathes, and suitable hand-held drilling applications.
Counterbore Dimensions
Cap Screw Size | Counterbore Diameter | Pilot Diameter |
M3 | 6.5mm | 3.20mm |
M4 | 8.0mm | 4.20mm |
M5 | 9.5mm | 5.20mm |
M6 | 11.0mm | 6.20mm |
M8 | 14.0mm | 8.20mm |
M10 | 17.5mm | 10.30mm |
M12 | 20.0mm | 12.40mm |
Applications
✔ Creating recessed holes for socket head cap screws
✔ Toolmaking and precision engineering work
✔ CNC machining and manual machining operations
✔ Machine building and equipment maintenance
✔ General fabrication and workshop use
✔ Suitable for steel, stainless steel, aluminium, brass and plastics
Benefits
Package Includes
1 x 7 Piece HSS Metric Counterbore Set
(M3, M4, M5, M6, M8, M10 & M12)
Fast Dispatch from Australia with FREE Tracked Shipping Australia Wide.