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The PROTO J5225MH is a 25 mm, 6-point hand socket designed for 3/8-inch drive ratchets and breaker bars. Built to ASME B107.5 standards, this standard-length socket features a chrome-plated finish that resists corrosion and makes cleanup easier in shop environments. The 6-point design delivers full-face contact on fastener flats, reducing rounding on stubborn or corroded hardware. At 0.29 pounds, it is a solid, appropriately weighted tool for the fastener size. Mechanics, maintenance technicians, and industrial tradespeople will find this socket suitable for general assembly and disassembly tasks where a 25 mm fastener is encountered.
The J5225MH fits standard 3/8-inch drive tool setups common in automotive, HVAC equipment service, light industrial maintenance, and plumbing fixture work. The 25 mm size is frequently used on metric hardware found on equipment panels, pipe flanges, and mechanical assemblies. Its standard length profile allows use in most open-access fastener locations without the bulk of a deep socket.
Designed for use with 3/8-inch drive ratchets, extensions, and breaker bars accepting standard square-drive hand sockets.
Install and remove this socket with the drive tool powered off or in a controlled manual operation. Ensure the socket is fully seated on the fastener before applying torque to avoid slippage. Inspect the socket and drive square for wear or cracks before each use. This tool should be used by qualified mechanics or technicians following applicable workplace safety guidelines.
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