Dormer
Dormer HSS-E Drill Bit, 20.5mm Head, 3 Flute(s), 90°, 1 Piece(s)
Part No.
G10720.5
Procurement Intelligence
This is a Dormer HSS-E countersink drill bit from their standard high-speed steel extended range series, designed for creating 90° conical recesses in metal workpieces for countersunk fasteners. Critical verification: confirm the 6.35mm shank diameter is compatible with your machine tool collet or chuck before procurement.
Countersunk hole preparation
Before ordering — verify:
| ☐ | Shank compatibility |
| ☐ | HSS-E material grade |
| ☐ | 90° angle tolerance |