Dormer A225BS5 HSS Centre Drill Bit Single Pack

This is a centering punch and drill bit designed for precise hole alignment. It is made from high-speed steel (HSS), uncoated, and features a straight conical shape with a 60° angle. The tool is intended for rough machining across materials such as carbon steel, alloy steel, and gray cast iron. It provides a 7/16 in tip diameter, a working length of 3/16 in, and an overall length of 2 1/2 in, with a body diameter of 7/16 in. It conforms to BS 328 (Form A) centering hole standards and is compatible with standard drill chucks and combined drill and reamer tools. It is suitable for use in drilling and roughing operations, and can be installed by inserting the bit into a compatible tool and securing it firmly. The drill is designed for use in both hand and machine operations.

Features

• Tip diameter: 7/16 in
• Working length: 3/16 in
• Overall length: 2 1/2 in
• Body diameter: 7/16 in
• Material: High-speed steel (HSS), uncoated, BS 328(Form A) compliant