Tekton SHB13402 Long Hex Bit Socket 3/8 in Drive 4 Mm

Product Description

The TEKTON SHB13402 is a long hex bit socket designed for use with 3/8 inch drive ratchets, extensions, and torque wrenches. It accepts a 4 mm hex fastener and measures 5.9 inches overall length, giving technicians the reach needed to seat fasteners recessed in deep bores or tight housings. The extended length makes it well suited for assembly and service work where a standard-length hex socket cannot reach. This socket is a hand-tool staple for mechanics, HVAC techs, electricians, and general trade professionals who regularly work with hex-head fasteners.

This socket fits common 3/8 inch drive tool setups and is appropriate for light to medium duty fastener work across residential and commercial service applications. The 4 mm hex size is commonly found on equipment panels, junction box hardware, machine fasteners, and HVAC component mounting hardware. The long-series design allows use through deep counterbores and in restricted-access areas where a short hex bit socket would bottom out before reaching the fastener.

Key Features

• 3/8 inch drive interface fits standard ratchets, torque wrenches, and extensions
• 4 mm hex bit size for metric hex fasteners
• 5.9 inch overall length provides extended reach into deep bores and recessed fastener locations
• Long-series design suited for restricted-access installation and service scenarios
• Weighs 0.3 pounds for easy single-hand use

Compatibility

Designed as an OEM-style replacement and general-use hex bit socket compatible with 3/8 inch drive ratchets, breaker bars, torque wrenches, and extension bars accepting standard 3/8 inch square drive tooling.

Installation Notes

Install and remove using a 3/8 inch drive ratchet or torque wrench. Ensure the drive detent or retaining ring seats fully before applying torque to prevent socket disengagement. For torque-sensitive fasteners, consult the equipment manufacturer specifications before use. Inspect the socket for cracks or wear before each use and replace if the hex profile shows rounding or damage.