Bit Jonnesway SPLINE XZN M12x75mm 6-point 10mm D10M75M12A for screwdrivers and bit holders

Jonnesway SPLINE XZN M12x75mm bit (model D10M75M12A) is a 6-point spline drive accessory with a 10 mm working diameter and 75 mm length. It is made for use with compatible screwdrivers and bit holders to engage XZN/M12 spline fasteners commonly found in automotive and mechanical assemblies. The bit’s geometry delivers accurate alignment and consistent contact with spline heads, reducing the risk of rounding and ensuring reliable torque transfer for maintenance and repair tasks.

Advantages

The 6-point spline profile provides even load distribution across the fastener profile and minimizes slipping during tightening or loosening. With a 75 mm length, the bit reaches recessed or partially obstructed fasteners while maintaining control. The 10 mm working diameter ensures compatibility with standard XZN/M12 fittings and stable fit in bit holders and quick-change adapters suitable for spline bits.

Suitable for

• Automotive repair and maintenance involving XZN/M12 spline bolts
• Mechanical assembly and disassembly of spline-head fasteners
• Workshops and service bays using interchangeable bits and holders
• Tight spaces where extended-length bits are required

Key specifications

• Drive type: 6-point spline (XZN)
• Size designation: M12
• Working diameter: 10 mm
• Overall bit length: 75 mm
• Connection form: compatible with standard screwdriver bit holders and quick-change adapters

How to use

Insert the bit into a compatible screwdriver, ratchet adapter, or quick-change bit holder until it seats securely. Align the spline bit with the matching XZN/M12 fastener and apply steady torque while keeping the driver shaft inline with the fastener axis. For removal, apply controlled reverse torque; avoid excessive force or impact that could damage the fastener or bit. Inspect the bit for wear before use and replace if profile degradation is visible.

Usage recommendations

Use the bit with hand tools or low-speed power tools rated for interchangeable bits. For high-torque or impact applications, select tools and holders designed for spline bits and follow manufacturer torque limits. Store the bit in a clean, dry place to prevent corrosion and check compatibility with fastener material to reduce the risk of galling or stripping.