Presto 013207.7 - 7.70mm SS HSS Hi-Nox JOBBER DRILLS FOR STAINLESS STEEL

Applications

Short fluted jobber drill to give more strength. To be used in Austenitic Stainless Steel, in sheet metal with work hardened surface, and steels with galvanised surface coating. Particularly used in hand machines, where centring is a problem.

Pack Qty - 10

Design characteristics
Point grinding: cone relief point
Point angle: 130°
Web thinning: none
Helix angle: high
Web thickness: dual strengthened
Web taper: dual
Flute form: rolled heel
Tolerance of dia.: h8
Tolerance of shank: f11