Whitney Tool 10593 — Metric Cap Screw Counterbore, 21mm Pilot, 3T, 1" Shank, 10" OAL, HSS.
Metric Solid Pilot Cap Screw Counterbore, 20MM Screw Size, 21.0MM Pilot Dia., 25.4MM Shank
- Cut Diameter (mm): 33
- Pilot Diameter: 21mm
- Number of Teeth: 3
- Tooth Configuration: 20° Right Hand Helix
- Shank Diameter: 1"
- Overall Length: 10"
- Shank Type: Weldon
- Material: High Speed Steel
- Coating: No Coating
- WTC No: CBSP332101
Part of the Whitney Tool Cap Screw – Metric series (Counterbores). Made in Bedford, Indiana, USA.

