Proto J4770-6 Hex Bit Socket Set 1/4 in Drive 6 Pc

Product Description

The PROTO J4770-6 is a 6-piece metric hex bit socket set built for 1/4 inch drive ratchets and extensions. The set covers hex sizes from 2 mm to 6 mm, giving technicians a compact range for fastener work across HVAC equipment panels, electrical enclosures, pool equipment housings, and general mechanical assemblies. Each socket transmits torque directly to hex fastener heads with minimal slippage. The set weighs 0.41 pounds, making it a lightweight addition to a service bag or tool cart. Intended for use by licensed tradespeople and experienced service technicians who require precise, repeatable fastener engagement on metric hardware.

This hex bit socket set suits residential and light commercial service applications where metric hex fasteners are common. Typical install scenarios include access panel removal on HVAC air handlers, pump housing assembly on pool and spa equipment, and enclosure work on electrical control panels. The 1/4 inch drive sizing is standard for low-torque, precision fastener tasks where larger drive tools would be impractical. The 2 mm to 6 mm metric range covers the most frequently encountered hex socket head cap screws and set screws found in trade equipment.

Key Features

• 6-piece set covers 2 mm, 3 mm, 4 mm, 5 mm, and 6 mm metric hex sizes
• 1/4 inch drive compatibility works with standard ratchets, extensions, and adapters
• Metric measurement type suited for imported and OEM trade equipment fasteners
• Compact, lightweight design at 0.41 pounds for easy inclusion in field service kits
• Hex bit socket style provides direct drive engagement on internal hex fasteners

Compatibility

Designed for use with standard 1/4 inch drive ratchets, extensions, and drive tools. Compatible with metric hex socket head fasteners ranging from 2 mm to 6 mm in size.

Installation Notes

Use with a calibrated 1/4 inch drive torque wrench when fastener torque specifications are required. Ensure the drive tool and socket are fully seated before applying torque to avoid rounding fastener heads. This set is intended for hand-tool use only and should not be used with impact drivers unless the sockets are rated for impact service. Always de-energize electrical equipment and shut off relevant systems before servicing panels or enclosures.