Drill Bit for Spot Welding 6 mm × 70 mm L, PARTNER PA-3828F

PARTNER PA-3828F drill bit, 6 mm × 70 mm L, is a straight, single-diameter cutting tool developed for spot welding applications and metalworking tasks where a precise 6 mm hole and a 70 mm working length are required. The bit is intended to create pilot holes, clean out welding punctures and remove burrs in sheet metal and similar materials. It can be used with handheld drills and drill presses that accept standard 6 mm shanks and provides consistent reach for through-holes or partial-depth drilling in thin to medium-thickness metal panels.

Advantages

The straight geometry and consistent diameter of this drill bit enable accurate, repeatable 6 mm holes suitable for alignment and fastener clearance after spot welding. Its length of 70 mm offers extended reach for deeper holes or hard-to-access areas while maintaining rigidity for controlled drilling. Designed for workshop and field use, the bit is compatible with common drilling tools and simplifies the process of cleaning weld spots and preparing parts for fastening or finishing.

Suitable for

• Creating pilot holes in sheet metal after spot welding
• Cleaning out welding punctures and spatter
• Drilling clearance holes for bolts, rivets, or fasteners
• Use with handheld drills and drill presses for automotive and metal fabrication work

Key specifications

• Diameter: 6 mm
• Overall working length: 70 mm
• Straight shank and single-diameter flute geometry
• Designed for use in sheet metal and similar thin to medium-thickness materials
• Intended for use with handheld drills and drill presses

How to use

Secure the workpiece to prevent movement and select an appropriate cutting speed for the metal being drilled. Install the drill bit securely in the chuck and align it with the marked drilling point. Apply steady, moderate pressure and allow the bit to cut without excessive force; backing off periodically will help clear chips. For best results on coated or painted surfaces, remove coating at the drill point or start with a center punch to prevent walking. After drilling, deburr the hole as needed to ensure proper fit for fasteners.

Usage recommendations

Use cutting fluid or a suitable lubricant when drilling steel to extend bit life and improve hole quality. Replace the bit if signs of dulling or chipping appear to maintain clean, accurate holes. Store the drill bit in a protective case to prevent damage and maintain cutting performance.