Socket bit 1/2" Hartsson 12-point 8 mm (model 17C308Z)

Hartsson 12-point socket bit with a 1/2" drive and an 8 mm nominal size (model 17C308Z) is a precision tool designed for fastening and loosening 12-point fasteners and bolts. The 12-point profile provides improved engagement with fastener heads in confined spaces and on partially damaged or rounded corners. The socket bit is compatible with standard 1/2" ratchets, breaker bars and impact adapters, making it suitable for workshop, automotive and industrial tool kits.

Advantages

The 12-point geometry reduces the need for extreme handle movement when aligning the tool on the fastener, allowing work in tighter clearances compared with 6-point profiles. Constructed from hardened steel with a machined drive interface, the socket bit offers reliable torque transfer and resistance to wear. Its 1/2" drive interface ensures compatibility with common hand and power drives used in professional and DIY settings.

Suitable for

• Automotive maintenance and repair where fasteners are in recessed or tight spaces
• Mechanical assembly and disassembly of machinery and equipment
• Industrial maintenance tasks requiring durable, interchangeable socket bits
• Situations with partially damaged or rounded fastener heads that still accept a 12-point engagement

Key specifications

• Drive size: 1/2" compatible drive interface
• Nominal socket size: 8 mm
• Point profile: 12-point
• Material: hardened machined steel (suitable for high-torque hand use)
• Typical applications: automotive, mechanical, industrial maintenance

How to use

Select the 8 mm socket bit and attach it securely to a 1/2" ratchet, breaker bar or compatible adapter. Place the 12-point socket over the fastener head, ensuring full engagement before applying torque. Turn the ratchet or bar in the required direction to tighten or loosen the fastener; use steady, controlled force to avoid slipping. For stubborn or seized fasteners, apply penetrating lubricant and use an appropriate breaker bar or torque tool, observing safe working practices.

Usage recommendations

For safe and effective use, match the 8 mm socket precisely to the fastener, avoid excessive impact on non-impact-rated bits, and inspect the socket bit regularly for wear or deformation. Use appropriate personal protective equipment and the correct drive adapters when working with power tools.