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The PROTO J47045M is a 4 mm, 6-point hand socket designed for precision fastener work in professional and industrial settings. Built on a 1/4 inch drive, it accepts standard ratchets, extensions, and drive tools. The 6-point geometry delivers full contact on hex fastener flats, reducing the risk of rounding under torque. A chrome-plated finish provides corrosion resistance and makes surface cleaning straightforward during routine tool maintenance. At 0.03 pounds, it is lightweight enough for confined-space work without sacrificing grip or drive engagement. Standard length construction suits most bench and field applications. Licensed mechanics, HVAC technicians, electricians, and plumbers reach for this size when servicing small fasteners on equipment panels, valve assemblies, and terminal enclosures.
This socket is suited for any trade environment where 4 mm hex fasteners appear, including light equipment panels, control boards, terminal covers, and small mechanical assemblies. Standard length makes it compatible with common 1/4 inch drive ratchets and torque wrenches found in professional tool sets. It performs in both residential service calls and commercial maintenance environments where compact, metric tooling is required.
Designed as a standard 1/4 inch drive, 4 mm hand socket compatible with 1/4 inch drive ratchets, torque wrenches, and extensions from major professional tool systems.
Installation and use of this socket requires a compatible 1/4 inch drive ratchet or torque wrench. Before servicing any fasteners on electrical panels, HVAC equipment, or plumbing assemblies, ensure power is off and all energy sources are isolated per applicable safety codes. Avoid using impact drivers with hand-rated sockets unless the socket is specifically rated for impact use. Inspect the socket for cracks or wear before each use.
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