Description

High Speed Steel. 4-flute. 

Enlarge the top porting of an existing hole forming a cylindrical-shaped opening with a flat bottom that acts as as seat for standard cap screw head M3 ~ M12mm.

Other types of counter-bore can be used for the cylindrical seat.

Product form

Counter-Bore

$25.00

SKU: 1138-12

  • Shipped today? Order within: Apr 14, 2026 13:00:00 +1000

Description

High Speed Steel. 4-flute. 

Enlarge the top porting of an existing hole forming a cylindrical-shaped opening with a flat bottom that acts as as seat for standard cap screw head M3 ~ M12mm.

Other types of counter-bore can be used for the cylindrical seat.

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