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JACOBS Drill Chuck Key: Thumb Handle, K2 - Thumb-Handle Keys for Jacobs Drill Chucks
JACOBSThumb-Handle Keys for Jacobs Drill Chucks

JACOBS Drill Chuck Key: Thumb Handle, K2

The JACOBS Drill Chuck Key is a thumb-handle key for Jacobs drill chucks, model K2 with a 1/4 in pilot. It is part of the 2 Series and carries manufacturer part number JCM3649P20.

SKU 3G-OTH-284948

Brand
JACOBS
Item
Drill Chuck Key: Thumb Handle, K2
Category
Thumb-Handle Keys for Jacobs Drill Chucks
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Technical Specifications

JACOBS
Manufacturer Part Number
JCM3649P20

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JACOBS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The JACOBS Drill Chuck Key is a thumb-handle key for Jacobs drill chucks, model K2 with a 1/4 in pilot. It is part of the 2 Series and carries manufacturer part number JCM3649P20.

Frequently Asked Questions

What is the JACOBS Drill Chuck Key used for?

The JACOBS Drill Chuck Key is used to tighten or loosen the jaws of a Jacobs drill chuck. Its thumb-handle design provides manual leverage for quick bit changes in drilling applications across metalworking, woodworking, and general industrial maintenance.

What are the specifications of the JACOBS Drill Chuck Key K2?

The JACOBS Drill Chuck Key is a K2 model with a 1/4 in pilot, part of the 2 Series. The manufacturer part number is JCM3649P20. It is designed specifically for Jacobs drill chucks and features a thumb-handle for manual operation.

Where to buy JACOBS Drill Chuck Key worldwide?

3G Electric supplies the JACOBS Drill Chuck Key worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this thumb-handle key for your Jacobs drill chuck.

How to install a JACOBS Drill Chuck Key?

To install the JACOBS Drill Chuck Key, insert the pilot into the matching hole on the drill chuck body. Turn the thumb-handle clockwise to tighten the chuck jaws around the drill bit, or counterclockwise to loosen. Ensure the key is fully seated before applying torque.

Used in

Common applications for JACOBS
General machining – JACOBS keyed drill chucks (e.g., MPN JCM6214, JT2 mount) for manual drill presses and milling machines.
Production drilling – JACOBS high-precision keyless chucks (e.g., MPN 31415, MT4) for automated CNC drilling centers.
Corrosive environment toolholding – JACOBS stainless steel chucks (e.g., MPN JCM6624Z) for food processing or chemical plant maintenance.
Spindle adaptation – JACOBS Morse taper sleeves (e.g., MPN 30427DN) for retrofitting older machine tools with modern chucks.
Portable drilling – JACOBS thread-mount chucks (e.g., MPN JCM6204, 5/16-24) for hand-held electric drills and magnetic base drills.

JACOBS Products

3G Electric supplies JACOBS thumb-handle keys for jacobs drill chucks. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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