Counterbore – HSS Straight Shank – Various Sizes

Description

Counterbore – HSS Straight Shank – Various Sizes

High speed steel straight shank

Used for drilling recessed holes into scales for Corby Bolts, Gulso Bolts, screws etc.

Counterbore pilots must be purchased separately. 

Uses a 1.5mm allen wrench.

Selection Guide

For Corby bolts:
3/16″ uses Counterbore #CB1 with Pilot #PIL1
1/4″ uses Counterbore #CB2 with Pilot #PIL2
5/16″ uses Counterbore #CB3 with Pilot #PIL3

For Gulso Bolts:
1/4″ uses Counterbore #CB2 with Pilot #PIL5
5/16″ uses Counterbore #CB3 with Pilot #PIL2
3/8″ uses Counterbore #CB4 with Pilot #PIL4

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