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

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

Metric Tolerances:
Diameter: up to 38.00mm. Tolerance: +0.0630, -0.0130.
Diameter: Over 38.00mm. Tolerance: +0.1250, -0.0000.