Whitney Tool 10539 — Cap Screw Counterbore, 0.406" Dia, 0.25" Pilot, 3T, 3/8" Shank, HSS.
Solid Pilot Cap Screw Counterbore, 1/4" Screw Size, .2500" Pilot Dia.
- Cut Diameter: 0.406"
- Cut Diameter (mm): 10.31
- Pilot Diameter: 0.25"
- Number of Teeth: 3
- Tooth Configuration: 20° Right Hand Helix
- Shank Diameter: 3/8"
- Overall Length: 5"
- Shank Type: Weldon
- Material: High Speed Steel
- Coating: No Coating
- WTC No: CBSP04061
Part of the Whitney Tool Cap Screw – Inch series (Counterbores). Made in Bedford, Indiana, USA.

