Jacobs 2 Drill Chuck Key K2 0.25 Inch Pilot

Product Description

The JACOBS #2 is a drill chuck key designed to tighten and release drill chucks on bench-top and floor-standing drill presses, lathes, and similar rotary equipment. Key number K2 fits the corresponding chuck series and uses a 0.25-inch pilot diameter to seat squarely into the chuck body for reliable engagement. At 0.17 pounds, it is a lightweight, single-piece tool suited for daily shop use. Machinists, maintenance technicians, and tool-room professionals reach for this key as a direct OEM-style replacement or a spare when the original is lost or worn.

This chuck key is appropriate for light industrial and professional trade shop environments where JACOBS-pattern chucks are standard equipment. It is commonly found at drill press stations in fabrication shops, maintenance facilities, and production floors. The K2 key number designation matches specific chuck body sizes, so verifying the chuck series before ordering is recommended. Compatibility with product numbers 2A and 2B makes it a practical replacement option across those chuck variants.

Key Features

• K2 key number for direct fitment with matching JACOBS chuck series
• 0.25-inch pilot diameter seats accurately into the chuck pilot hole
• Lightweight at 0.17 pounds for easy one-handed operation
• Compatible with product numbers 2A and 2B chuck variants
• Single-piece construction with no moving parts to wear out

Compatibility

Compatible with JACOBS chuck product numbers 2A and 2B. Key number K2 with a 0.25-inch pilot diameter. Verify chuck series and pilot hole size before installation.

Installation Notes

A licensed machinist or qualified maintenance technician should verify the chuck key number and pilot diameter match the installed chuck before use. Power down and lock out the drill press or lathe at the disconnect before inserting or removing the chuck key. Do not use an extension on the chuck key handle, as over-tightening can damage chuck jaws and the spindle arbor. Replace any chuck key that shows signs of rounding at the gear teeth or pilot wear.