JACOBSThumb-Handle Keys for Jacobs Drill Chucks

JACOBS Drill Chuck Key: Thumb Handle, K7

The JACOBS Drill Chuck Key is a thumb-handle key for Jacobs drill chucks, model K7 with a 7/32 in pilot. It is part of the 7 Series and carries manufacturer part number JCM3659P20.

SKU 3G-OTH-284952

Brand

JACOBS

Item

Drill Chuck Key: Thumb Handle, K7

Local availability & support

Delivery: Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment: Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

JACOBS

Manufacturer Part Number

JCM3659P20 

Technical Documents

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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 K7 with a 7/32 in pilot. It is part of the 7 Series and carries manufacturer part number JCM3659P20.

Frequently Asked Questions

What is the JACOBS Drill Chuck Key K7 used for?

The JACOBS Drill Chuck Key K7 is a thumb-handle key used to tighten or loosen Jacobs drill chucks on industrial drilling machines. It is designed for the 7 Series chucks and features a 7/32 in pilot for precise engagement. This key provides manual leverage for secure bit holding during metalworking, woodworking, and assembly operations.

What are the specifications of the JACOBS Drill Chuck Key JCM3659P20?

The JACOBS Drill Chuck Key JCM3659P20 is a thumb-handle key from the 7 Series with a 7/32 in pilot. It is manufactured by JACOBS under part number JCM3659P20. The key is designed for use with Jacobs 7 Series drill chucks, providing a comfortable thumb-grip handle for manual chuck tightening and loosening.

Where to buy JACOBS Drill Chuck Key JCM3659P20 worldwide?

You can source the JACOBS Drill Chuck Key JCM3659P20 worldwide through 3G Electric, a global industrial equipment distributor established in 1990. 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact them for availability and lead time on this thumb-handle key for Jacobs 7 Series chucks.

How to select the correct JACOBS drill chuck key?

To select the correct JACOBS drill chuck key, match the key's series and pilot size to your chuck model. The JCM3659P20 is a thumb-handle key for the 7 Series with a 7/32 in pilot. Always verify the chuck series number and pilot diameter before ordering. For assistance, consult 3G Electric, which supplies genuine JACOBS replacement keys.

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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