Wera 05003031001 Hex Bit Socket 3/8 in Drive 4 Mm

Product Description

The WERA 05003031001 is a hand hex bit socket designed for use with 3/8 inch drive ratchets, breaker bars, and torque wrenches. It accepts a 4 mm hex bit drive and measures 1-3/8 inches overall length. Constructed from chrome-finish steel, this socket delivers solid engagement on hex fasteners in mechanical, electrical, and general trade applications. It is sized for hand-tool use and fits standard 3/8 inch drive tool inventories found in most professional shops and field kits.

This hex bit socket is suited for residential and commercial service work where 4 mm hex fasteners are common, including HVAC equipment panels, electrical enclosures, and plumbing fixture hardware. The 3/8 inch drive size makes it compatible with a wide range of mid-size ratchets and extensions. Technicians working on equipment that uses recessed hex-head fasteners will find this socket a direct fit for those applications.

Key Features

• 3/8 inch drive compatible with standard mid-size ratchets and extensions
• 4 mm hex bit drive size for metric hex fasteners
• 1-3/8 inch overall length for compact tool access
• Chrome steel construction for corrosion resistance and durability
• Hand-tool rated for use with ratchets, breaker bars, and torque wrenches

Compatibility

Designed as an OEM-style replacement or addition for standard 3/8 inch drive hand-tool sets requiring 4 mm hex bit socket coverage.

Installation Notes

This socket is installed by hand-tool technicians across mechanical, electrical, and plumbing trades. Ensure the drive connection is fully seated in the ratchet or extension before applying torque. De-energize or shut off equipment before accessing fastened panels or enclosures. Inspect the socket for wear or rounding before use on critical fasteners.