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Bordo 180 Degree Counterbore (3870): 6 x 3.2mm

SKU: A0205516 | Model: 3870-3.0

Diameter (D x d) 6 x 3.2mm. Bordo 180 Degree Counterbore (3870)

Bright finish HSS-Co5 (Cobalt) for extreme tool life.

Use to enlarge the top of an existing hole to create a cylindrical-shaped opening with a flat bottom that acts as a seat for the head of a screw or wood plug.

Ideal for use with standard cap screws or socket head screws.

Counterbore use with Fillister cap screw and ejector caps in moulds.

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