Jacobs JCM3605AP Drill Chuck Key Kga 0.25 Inch Pilot

Product Description

The JACOBS JCM3605AP is a KGA-pattern drill chuck key designed to tighten and release drill chucks in workshop and job-site settings. With a 0.25-inch (6.35 mm) pilot diameter, it seats securely in the chuck pilot hole to deliver reliable torque without slipping. This type of key is a standard consumable and replacement item for trades and shop environments that rely on keyed chuck systems for consistent bit retention. Machinists, carpenters, electricians, and general tradespeople commonly keep a spare on hand due to the frequency with which chuck keys are misplaced or worn.

The JCM3605AP is intended for use with 0.25-inch and 0.375-inch Multi-Craft drill chucks. It suits both benchtop drill presses and handheld drill applications where a keyed chuck is installed. The KGA key number designation identifies the specific gear tooth and pilot geometry, making it important to match the key number to the chuck for proper engagement. This key weighs 0.45 pounds and is sold individually.

Key Features

• KGA key number for correct gear and pilot geometry engagement
• 0.25-inch (6.35 mm) pilot diameter for secure chuck pilot-hole fit
• Compatible with both 0.25-inch and 0.375-inch Multi-Craft drill chucks
• Lightweight at 0.45 pounds for easy handling and storage
• Sold as a single unit for straightforward replacement ordering

Compatibility

Designed for use with 0.25-inch and 0.375-inch Multi-Craft drill chucks requiring a KGA-pattern key with a 0.25-inch pilot diameter.

Installation Notes

Insert the pilot pin fully into the chuck pilot hole before engaging the gear teeth to avoid stripping the chuck ring. Always remove the chuck key from the chuck before starting the drill. No special tools or codes are required for chuck key replacement, but verify the key number and pilot diameter match the installed chuck before use.