Proto J4709MN 9mm 12-point 1/4 Drive Hand Socket

Product Description

The PROTO J4709MN is a 9 mm, 12-point intermediate hand socket designed for 1/4-inch drive ratchets and extensions. Built from polished steel and manufactured to ASME B107.21 standards, it delivers reliable torque transfer in tight fastener applications. The 12-point design engages hex fasteners at more entry positions, which is useful when swing arc is limited. At a standard length of 1-17/64 inches overall, this socket fits into most hand-tool setups without clearance issues. It is suited for automotive, mechanical, and light industrial service work where a compact, metric hand socket is needed on a 1/4-inch drive.

The J4709MN is intended for professional hand-tool use in automotive repair, HVAC equipment service, plumbing fixture work, and general mechanical assembly. Its 9 mm size addresses a common metric fastener found across vehicle components, appliances, and light equipment. The standard-length profile works well in open and moderately confined spaces. Trade technicians who carry a complete 1/4-inch drive metric set will find this socket a direct-fit addition to that lineup.

Key Features

• 9 mm socket size fits common metric fasteners in automotive and mechanical applications
• 12-point design allows engagement at more positions, useful in limited-swing environments
• 1/4-inch drive compatibility works with standard ratchets, extensions, and adapters
• Polished steel construction meets ASME B107.21 standards
• Standard length profile at 1-17/64 inches overall for broad clearance compatibility
• Lifetime warranty coverage from the manufacturer

Compatibility

Designed as a standard 1/4-inch drive metric hand socket compatible with 1/4-inch drive ratchets, extensions, and flex handles conforming to ASME B107.21 drive-tool specifications.

Installation Notes

Technicians should confirm the fastener is 9 mm and properly seated in the socket before applying torque to avoid rounding. Inspect the socket and drive square for wear or cracks before use. Do not use hand sockets with impact drivers unless the socket is impact-rated. Keep the socket clean and dry for reliable drive-square engagement.