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JACOBS Thumb-Handle Key for Jacobs Drill Chucks, K4, 3/8 in Pilot - Thumb-Handle Keys for Jacobs Drill Chucks
JACOBSThumb-Handle Keys for Jacobs Drill Chucks

JACOBS Thumb-Handle Key for Jacobs Drill Chucks, K4, 3/8 in Pilot

The JACOBS Drill Chuck Key: Thumb Handle, K4, 3/8 in Pilot (MPN JCM3655P20) is a thumb-handle key designed for Jacobs drill chucks. It features a K4 size and a 3/8-inch pilot, with specifications including JACOBS…

SKU 3G-OTH-284951

Brand
JACOBS
Item
Thumb-Handle Key for Jacobs Drill Chucks, K4, 3/8 in Pilot
Part Number
JCM3655P20
Category
Thumb-Handle Keys for Jacobs Drill Chucks
Available to Order
Also known as:JCM3655P20JACOBS
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
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Technical Specifications

JACOBS
Manufacturer Part Number
JCM3655P20

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

Product Description

The JACOBS Drill Chuck Key: Thumb Handle, K4, 3/8 in Pilot (MPN JCM3655P20) is a thumb-handle key designed for Jacobs drill chucks. It features a K4 size and a 3/8-inch pilot, with specifications including JACOBS brand, 18N, and model JCM3655P20.

Frequently Asked Questions

What is the JACOBS Drill Chuck Key: Thumb Handle, K4, 3/8 in Pilot used for?

This thumb-handle key is used to tighten or loosen Jacobs drill chucks on industrial drilling equipment. It is designed for K4-size chucks with a 3/8-inch pilot, commonly found in machine shops, manufacturing plants, and maintenance operations where quick chuck adjustments are needed.

What are the specifications of the JACOBS Drill Chuck Key JCM3655P20?

The JACOBS Drill Chuck Key (MPN JCM3655P20) is a thumb-handle key with a K4 size and a 3/8-inch pilot. It is branded JACOBS, carries the model number JCM3655P20, and includes the specification 18N. This key is designed for use with compatible Jacobs drill chucks.

Where to buy the JACOBS Drill Chuck Key JCM3655P20 worldwide?

3G Electric supplies the JACOBS Drill Chuck Key JCM3655P20 to customers worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact our team to place an order or request a quote for this thumb-handle key.

How to select the correct JACOBS drill chuck key for your chuck?

To select the correct key, match the key size (e.g., K4) and pilot diameter (e.g., 3/8 inch) to your Jacobs drill chuck model. The JACOBS brand key JCM3655P20 is designed for K4 chucks. Always verify compatibility by checking the chuck's markings or consulting the manufacturer's documentation before purchasing.

Used in

Common applications for JACOBS
Metalworking job shops — JACOBS MT3 to MT3 Morse taper extension (30450DN) for extending reach when drilling deep holes on a milling machine.
Automotive engine rebuilding — JACOBS MT2 to MT2 Morse taper extension (30446N) used in a drill press to adapt short tooling for cylinder head work.
Aerospace component manufacturing — JACOBS MT4 to MT5 Morse taper extension socket (30455DN) to adapt MT4 tooling to an MT5 spindle on a large machining center.
General maintenance and repair — JACOBS MT3 to MT2 Morse taper extension (30447DN) for adapting MT2 shank tools to an MT3 spindle in a maintenance workshop.
Tool rooms and die maintenance — JACOBS MT5 to MT4 Morse taper extension (30454N) to reduce from MT5 spindle to MT4 tooling for precision reaming operations.
Heavy equipment repair — JACOBS MT3 to MT4 Morse taper extension (30452N) used in a radial arm drill to adapt MT3 tools to an MT4 spindle for large hole drilling.
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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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