Proto J4709TM 9mm 12-point 1/4 Drive Hand Socket

Product Description

The PROTO J4709TM is a 9 mm, 12-point hand socket designed for 1/4 inch drive ratchets and extensions. Built from alloy steel with a chrome-plated finish, this standard-length socket measures 0.875 inches overall in length. The 12-point geometry allows engagement at 30-degree increments, giving technicians more positioning options in tight spaces. It meets AS4984A and ASME B107.110-2012 standards, making it a reliable choice for professional hand-tool applications. Licensed trades, mechanics, and maintenance technicians working in confined areas will find the compact 1/4 inch drive sizing well suited to small fastener work.

This socket is appropriate for general mechanical assembly, automotive service, HVAC equipment fasteners, and light equipment maintenance where a 9 mm fastener size is common. The 1/4 inch drive interface is standard across a wide range of ratchet handles, extension bars, and flex heads, making this socket compatible with most existing 1/4 inch drive sets in a professional toolkit. It is intended for hand-tool use only and is not rated for impact driver applications.

Key Features

• 9 mm socket size fits metric fasteners common in automotive and light mechanical work
• 12-point design allows engagement every 30 degrees for better access in confined spaces
• 1/4 inch drive interface fits standard ratchets, extensions, and adapters
• Alloy steel construction with chrome-plated finish for corrosion resistance
• Meets AS4984A and ASME B107.110-2012 standards
• Standard length profile at 0.875 inches overall

Compatibility

Designed as a standard-length 1/4 inch drive hand socket for use with any ASME-compliant 1/4 inch drive ratchet, extension, or handle. Not tether capable.

Installation Notes

This socket is intended for hand-tool use by mechanics, HVAC technicians, and maintenance professionals. Confirm the fastener size before use to avoid rounding. Do not use with impact drivers or pneumatic tools. Inspect the socket for cracks or wear before each use and replace if the drive square or socket opening shows deformation.