Spline socket bit 1/2" Jonnesway M18 x 55 mm S64H4118

Jonnesway S64H4118 is a 1/2" spline socket bit sized M18 x 55 mm designed for use with ratchets and torque tools. The spline profile provides multiple contact points around the fastener head, which helps distribute load more evenly and reduces the risk of rounding. Intended for mechanical and automotive work, this socket bit is compatible with standard 1/2" drive tools and fits M18 spline bolts for both tightening and loosening operations.

Advantages

The spline design increases torque transfer by engaging several points on the fastener, improving grip under high loads. Constructed to align with common workshop drives, the 55 mm length gives clearance for recessed fasteners while maintaining compact handling. Compatibility with 1/2" drives and torque tools enables precise tightening and reliable loosening without special adapters.

Suitable for

• Automotive repair and maintenance involving M18 spline bolts
• General mechanical assembly and disassembly tasks
• Workshop use with ratchets, impact drivers (if specified), and torque wrenches
• Tightening or loosening fasteners in recessed or hard-to-reach locations

Key specifications

• Drive size: 1/2" (square drive compatible with 1/2" ratchets and torque tools)
• Spline size: M18
• Length: 55 mm
• Profile: spline (multi-point contact)
• Intended application: fastening and unfastening of M18 spline bolts

How to use

Select a compatible 1/2" drive ratchet or torque wrench and attach the S64H4118 spline socket bit securely to the square drive. Align the spline bit with the M18 fastener, ensure full engagement of the spline profile, and apply torque evenly. For controlled tightening, use a calibrated torque tool and set the required torque value. When loosening, apply steady force and avoid sudden impacts that exceed the tool's or bit's rated capacity.

Usage recommendations

Inspect the spline socket bit and the fastener before use; replace the bit if you observe excessive wear or deformation. Use the bit within the torque ratings of your tools and avoid using cheater bars or methods that may overload the socket or drive. Store the bit in a clean, dry environment to prevent corrosion and preserve fit accuracy.