Socket bit 1/2" Hartsson 30 mm 12-point model 17C330Z

Hartsson Socket bit 1/2" 30 mm 12-point model 17C330Z is a hand tool insert designed for fastening and loosening hexagonal fasteners in automotive, mechanical and maintenance work. The 12-point (double-hex) profile provides multiple engagement angles, which helps when accessing fasteners in confined spaces or when the fastener head is partially rounded. The 1/2" drive fits standard half-inch ratchets, breakers and torque wrenches, enabling use with a range of drive tools commonly found in workshops and on service vehicles.

Advantages

The 12-point geometry increases contact points on the fastener, reducing the risk of slipping on damaged heads while allowing engagement at smaller rotation increments. The 30 mm length gives reach past protruding components and aids access to recessed bolts. Constructed to meet typical durability expectations for professional workshop use, the bit is compatible with standard 1/2" drive accessories and can be used with manual or powered drive tools when appropriate.

Suitable for

• Automotive repair and maintenance
• Mechanical assembly and disassembly
• Workshop servicing of machinery and equipment
• Situations requiring access in tight or recessed areas

Key specifications

• Drive size: 1/2 inch
• Working end: 12-point (double-hex) profile
• Overall length: 30 mm working length
• Intended use: fastening and loosening hexagonal fasteners

How to use

Select a compatible 1/2" drive tool, such as a ratchet, breaker bar or torque wrench. Seat the 12-point socket bit fully onto the fastener head to ensure maximum contact area, then apply steady torque in the required direction. For stubborn or rusted fasteners, use gradual force and correct-specified torque limits for the fastener and tool. If using powered impact tools, verify that the bit and tool are rated for impact use to avoid premature wear or damage.

Usage recommendations

Inspect the fastener head and bit engagement before applying high torque. Use appropriate personal protective equipment when working with hand or power tools. For precision torque control, use a calibrated torque wrench and ensure the bit is fully seated on the fastener to reduce rounding and slippage.