Socket bit, Hartsson 7 mm hex 1/4" drive (model 17A107Z)

Hartsson 7 mm hex socket bit with a 1/4" drive (model 17A107Z) is a single-purpose hexagonal bit designed for compatibility with standard 1/4" drive ratchets, manual drivers and bit holders. It is intended for tightening and loosening 7 mm hex fasteners commonly found in automotive, assembly, repair and maintenance applications. The compact form factor allows work in confined spaces and integration into common bit sets and powered drivers.

Advantages

The Hartsson 7 mm hex socket bit provides a precise fit to 7 mm hex fasteners, reducing rounding and slippage during torque transfer. Its 1/4" drive interface ensures compatibility with a wide range of hand tools and quick-change bit holders. The compact length supports access to recessed fasteners while maintaining sufficient engagement for safe operation. The single-bit format simplifies selection when a specific hex size is required.

Suitable for

• Automotive repairs involving small hex fasteners
• Mechanical assembly and maintenance tasks
• Electronics enclosures and appliance service with 7 mm hex bolts
• Tight spaces where compact bits and 1/4" drive tools are needed

Key specifications

• Drive size: 1/4" (6.35 mm) square drive
• Bit tip: 7 mm hexagon
• Intended use: manual ratchets, bit drivers, and compatible power bit holders
• Form factor: single socket bit, compact length for confined access
• Material: hardened tool steel construction for torque transfer and durability

How to use

Insert the 1/4" drive end of the Hartsson 7 mm hex socket bit into a compatible ratchet, driver or bit holder until it locks or seats securely. Position the 7 mm hex tip onto the fastener head, ensuring full engagement of all six faces before applying torque. Turn the tool clockwise to tighten or counterclockwise to loosen, applying steady force to avoid cam‑out. For power drivers, use controlled speed and torque settings appropriate for the fastener and material.

Usage recommendations

Inspect the bit and fastener for wear or damage before use. Use appropriate personal protective equipment and select torque settings that match the fastener specification. Store the bit in a protective bit holder or case to prevent corrosion and preserve tip geometry.