Counterbore Drills

Counterbore drills are used to make a counterbore hole in the material when the head of a fastener, such as a hex head or socket head cap screw, is required to be flush with or below the level of a workpiece’s surface. For a spot-face, material is removed from a surface to make it flat and smooth, usually for a fastener.

SOMTA Counterbore Drills are ideal for drilling holes in handle material to fit inter screws or pivot screws.

The 7mm x 5mm is the standard size for the INTERSCREWS also available on this website.



Or split into 4x interest-free payments Learn more
Add to Wishlist
SKU: N/A Categories: ,
Somta - World Class Cutting Tools


Explaining Counterbore vs Countersink.

Counterbore and Countersink

Additional information

Weight N/A

2,5mm x 1,6mm counterbore, 3mm x 1,6mm counterbore, 3,5mm x 2mm counterbore, 3mm x 2mm counterbore, 7mm x 5mm counterbore, 7mm x 4,5mm counterbore, 7mm x 3mm counterbore, 10mm x 4,5mm counterbore, 10mm x 3mm counterbore



Somta Tools specialises in the design and manufacture of standard and custom tools for the industrial and “do it yourself” markets. Product categories can be summarised as drills, cutters, reamers, threading tools and toolbits, which are made in a wide range of sizes, using various materials (HSS and Solid Carbide) and PVD surface coatings to extend wear life.
Somta - World Class Cutting Tools