Proto J5218HS 9/16 in 6-point 3/8 Drive Hand Socket

Product Description

The PROTO J5218HS is a 9/16-inch, 6-point hand socket designed for professional trade use in automotive, mechanical, and industrial maintenance applications. Built from alloy steel with a chrome-plated finish, this socket fits a 3/8-inch drive and measures 27/32 inches in overall length, placing it in the low-profile category. The 6-point design maximizes contact with fastener flats, reducing the risk of rounding under torque. At 0.17 pounds, it is a compact, lightweight tool suited for confined-space fastener work where a standard-depth socket would not clear surrounding components.

This socket is well-suited for use in tight clearance environments commonly encountered in HVAC equipment panels, electrical enclosures, plumbing fixture installations, and general mechanical assemblies. The low-profile length makes it particularly useful where fastener access is limited by adjacent hardware, sheet metal, or structural framing. It is intended for hand-drive use with a 3/8-inch drive ratchet, breaker bar, or extension. Note that this socket is not tether capable and is not rated for impact driver use.

Key Features

• 9/16-inch socket size with 6-point geometry for maximum fastener contact and reduced rounding risk
• 3/8-inch drive compatibility for use with standard ratchets and extensions
• Low-profile overall length of 27/32 inches for confined-space access
• Alloy steel construction for durability under professional use conditions
• Chrome-plated finish for corrosion resistance and easy cleaning
• Lightweight at 0.17 pounds for reduced hand fatigue during repetitive fastener work

Compatibility

Designed for use with 3/8-inch drive ratchets, breaker bars, and extensions in standard hand-tool applications. Compatible with any 3/8-inch drive system accepting low-profile sockets.

Installation Notes

This socket is intended for hand-drive use only and should not be used with impact drivers or pneumatic tools. Ensure the drive tool is fully seated in the socket before applying torque to prevent slippage. Inspect the socket and fastener for wear or damage before use, particularly in high-cycle service environments. Store separately from impact-rated sockets to avoid misidentification on the job.