Gearwrench 84390 3/8 Drive 5mm Hex Bit Socket

Product Description

The GEARWRENCH 84390 is a 3/8 inch drive hex bit socket designed for driving 5mm hex fasteners in professional mechanical and maintenance applications. Built from steel and manufactured to ASME B107.33 standards, this socket delivers reliable torque transfer on hex-head bolts and fasteners. The compact bit length of 0.23 inches and an overall length of 1-31/32 inches make it well-suited for work in moderate-access areas. It is a single-piece socket intended for use with any standard 3/8 inch drive ratchet, extension, or torque wrench. Mechanics, HVAC technicians, and general maintenance professionals will find this socket appropriate for routine fastener work on equipment panels, brackets, and assemblies.

This socket is suited for residential and light commercial service work where 5mm hex fasteners are common. Typical applications include equipment panel removal, motor mount hardware, and general mechanical assembly tasks. The 3/8 inch drive size makes it compatible with a wide range of mid-size drive tools found in standard trade tool sets. It is sold individually and is appropriate as a replacement or supplemental addition to an existing socket set.

Key Features

• 3/8 inch drive interface fits standard ratchets, extensions, and torque wrenches
• 5mm hex bit size for metric hex fasteners
• Steel construction for durability under standard torque loads
• Meets ASME B107.33 standards for hand socket tools
• Compact overall length of 1-31/32 inches for moderate-access fastener work

Compatibility

Designed as an OEM-style replacement or supplemental socket for use with any standard 3/8 inch drive ratchet or drive tool system requiring a 5mm hex bit socket.

Installation Notes

Installation is performed by hand tool technicians and general mechanics using standard 3/8 inch drive equipment. Always confirm the fastener hex size before applying torque to avoid rounding. Ensure the socket is fully seated on the drive tool and fastener before turning. Follow applicable equipment service documentation for torque requirements on the fastener being driven.