Proto J6904M Impact Socket 1/4 in Drive 4mm 6-point

Product Description

The PROTO J6904M is a 4mm hex drive impact socket designed for use with 1/4 inch drive impact wrenches and ratchets. Built as a 6-point socket, it delivers focused force on fastener flats to reduce rounding under high-torque impact conditions. The overall length measures 7/8 inches, making it compact and well-suited for tight-clearance fastener access. At 0.03 pounds, it adds minimal weight to a socket set. This socket is appropriate for automotive, mechanical, and industrial technicians who require a reliable small-drive impact-rated socket for metric hex fasteners.

The J6904M fits applications where a 4mm hex fastener must be driven or removed under impact power. Common use cases include small fastener removal on automotive assemblies, equipment panels, and machinery where a 1/4 inch drive impact tool is preferred. Its compact 6-point design is particularly useful in confined spaces where a larger socket would not seat properly. Mechanical technicians and automotive service professionals are the primary users of this socket size and drive configuration.

Key Features

• 1/4 inch drive fits standard 1/4 inch drive impact wrenches and ratchets
• 4mm hex socket size for metric hex fasteners
• 6-point design concentrates torque on fastener flats to reduce rounding
• Compact 7/8 inch overall length for tight-clearance installations
• Impact-rated construction suitable for use with powered impact tools
• Lightweight at 0.03 pounds for minimal hand fatigue in high-frequency use

Compatibility

Designed as an OEM-style impact socket compatible with standard 1/4 inch drive impact wrenches, ratchets, and extension bars requiring a 4mm hex drive socket.

Installation Notes

This socket is intended for installation and removal of 4mm hex fasteners using a 1/4 inch drive impact tool. Confirm the socket is fully seated on the drive anvil before applying torque to prevent slippage or socket ejection. Always verify the fastener size before applying impact power to avoid fastener damage. Mechanical technicians should follow standard torque procedures and applicable equipment service guidelines when using impact sockets.