Whitney Tool 20563 — SP C'bore M42 3mm Screw Size 3.4mm Pilot Dia., 9.525mm SH.
Metric Solid Pilot Cap Screw Counterbore, 3MM Screw Size, 3.4MM Pilot Dia., 9.525MM Shank M42
- Shank Diameter: 3/8"
- Material: M42 Cobalt
- Coating: No Coating
- WTC No: CBSP06034M42
Part of the Whitney Tool Cap Screw – Metric series (Counterbores). Made in Bedford, Indiana, USA.

