HSS-Co 5% Threaded Shank Slot Drills 3 Flute, Regular Series - Inch

Regular Series Type 5321T.
Bright finish. Flute type: 30° helix. Manufactured to BS 122: Part 4: 1980.

Inch Tolerances:
Diameter: up to 1". Tolerance: +0.0025, -0.0005.
Diameter: Over 1". Tolerance: +0.0050, -0.0000.