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The APEX 80400 is a 3/8 inch drive, 6-point, 18 MM full polish chrome socket designed for professional fastener work across a wide range of trade applications. Built for speed and durability, it features large hard-stamped size markings for quick identification in the field. The off-corner loading design transfers force to the flats of the fastener rather than the corners, reducing the risk of rounding and extending the service life of both the socket and the fastener. At 0.24 pounds and 2.5 inches in length, it is a compact, single-piece hand tool suited for everyday use by mechanics, HVAC technicians, plumbers, and electricians.
This socket is well suited for residential and light commercial service work where a 3/8 inch drive tool is the standard choice. The 18 MM size covers a broad range of metric fasteners commonly found on HVAC equipment, pipe hangers, electrical panels, and mechanical assemblies. The full polish chrome finish resists corrosion and simplifies cleaning after use in dirty or wet environments. It sells as a single unit and fits standard 3/8 inch drive ratchets and extensions already in most service kits.
Designed for use with standard 3/8 inch drive ratchets, extensions, and torque wrenches. Compatible with metric fasteners requiring an 18 MM socket.
This socket is installed and removed by hand tool technicians working across the trades. Always ensure the ratchet drive and socket are fully seated before applying torque. Power down or de-energize equipment and shut off fluid supply lines before accessing fasteners on live systems. Inspect the socket for cracks or wear before use and replace if the chrome finish is flaking or the drive square shows deformation.
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