Gearwrench 80425 Hex Bit Socket 3/8 in Drive 4 Mm

Product Description

The GEARWRENCH 80425 is a 3/8 inch drive hex bit socket designed for fastening and loosening hex-drive fasteners in professional hand-tool applications. Built from steel with a chrome finish, it accepts a 4 mm hex bit and delivers a 1.181 inch bit length with an overall length of 1-55/64 inches. Licensed technicians and tradespeople across HVAC, plumbing, electrical, and general mechanical service use hex bit sockets like this one to drive Allen-head fasteners in tight-clearance areas where a standard L-key will not reach. The chrome finish resists corrosion and makes the socket easy to wipe clean in the field.

This socket is suited for residential and commercial service work wherever a 3/8 inch drive ratchet or breaker bar is the tool of choice. Common applications include equipment panel fasteners, access cover screws, set screws, and mechanical assembly work across HVAC equipment, plumbing fixtures, and electrical enclosures. It is also used in automotive and general maintenance shops. The compact overall length keeps it manageable in confined spaces while still providing the bit engagement depth needed for secure torque transfer.

Key Features

• 3/8 inch square drive fits standard 3/8 inch ratchets, extensions, and adapters
• 4 mm hex bit size for metric hex-drive fasteners
• 1.181 inch bit length provides solid fastener engagement
• Steel construction with chrome finish for durability and corrosion resistance
• Compact 1-55/64 inch overall length suits confined work areas
• Meets ANSI and ASME standards

Compatibility

Designed as an OEM-style replacement and standard hex bit socket for use with any 3/8 inch drive ratchet, torque wrench, or extension bar accepting standard square-drive accessories.

Installation Notes

Install and remove by a qualified technician using a 3/8 inch drive ratchet or torque wrench. Ensure the square drive is fully seated before applying torque to prevent rounding the drive recess. When working on energized electrical enclosures or pressurized systems, de-energize or depressurize the equipment before accessing hex fasteners. Inspect the socket for cracks or wear before each use and remove from service if damage is found.