Drill bit Proline 90416 — metal 4 mm, length 160 mm, 1 pc

Proline 90416 is a single 4 mm metal drill bit with a total length of 160 mm, supplied as one piece. Intended primarily for drilling metal, this drill bit is suitable for use with handheld drills and drill presses when a narrow diameter combined with extended reach is required. The geometry and length are matched to tasks such as through-holes and general metalworking in sheet metal, thin plates and light structural components.

Advantages

The Proline 90416 drill bit features a design focused on durability and effective cutting performance for metalwork. Its shape promotes accurate centered drilling and consistent hole quality. The extended 160 mm length provides additional reach for jobs where access is limited, while the 4 mm cutting diameter enables precise, narrow holes. Supplied as a single piece, it is ready for immediate installation in standard chucks.

Suitable for

• Drilling through-holes in sheet metal and thin plates
• Creating small-diameter holes in light structural components
• Use with handheld drills for on-site metalwork
• Use with drill presses for controlled, repeatable metal drilling

Key specifications

• Cutting diameter: 4 mm
• Total length: 160 mm
• Material application: metal
• Package quantity: 1 piece

How to use

Select an appropriate drill speed and clamp the workpiece securely to prevent movement. Fit the Proline 90416 bit into a compatible chuck and ensure it is tightened concentrically. Begin drilling with steady pressure; for thin materials, use low to moderate feed to avoid distortion. Clear swarf periodically and, when drilling thicker sections, withdraw the bit occasionally to remove chips and cool the cutting edges. Finish holes with a deburring tool if necessary.

Usage recommendations

Use cutting fluid or coolant when drilling thicker or harder metals to extend tool life and improve cutting performance. Ensure correct drill speed for the material and maintain secure clamping of the workpiece to achieve accurate, centered holes and to reduce the risk of breakage in small-diameter bits.