15x89mm F/L x 187mm OAL 2MT T/S Armour Piercing Drill 6788 OLDSMOBILE CUTLASS SUPREME 1968-1970
Baker’s notes & crumb story
Description
OLDSMOBILE CUTLASS SUPREME 1968-1970
6 TWIN CAM 1968-1974 (Front)
Dimensions 3/8" x 11 7/8"
This is for for 1 x 3PK0715 Mitsuba Fan Belt
15x89mm F/L x 187mm OAL 2MT T/S Armour Piercing Drill 6788 OLDSMOBILE CUTLASS SUPREME 1968-1970Used for heavy duty drilling in work Hardening steel with a manganese content of 12 14 percent . 1 Mosre taper Overall length 819mm Flute length 89mm Operating Conditions cutting speed between 3 4 meters per minute a feed of only 60 percent of standard drill Very rigid machine set up drilled without coolant Precautions drill must not touch work without feed being engaged no marking of work surface ie centre punch