Socket set Cometic spline 1/4" 3/8" 1/2" M4–M18 10 pcs

Cometic spline socket set with 1/4", 3/8" and 1/2" drive sizes provides ten spline sockets covering metric thread sizes M4–M18. The set is designed for use with spline fasteners and is compatible with standard ratchets and torque tools that accept 1/4", 3/8" or 1/2" drives. The compact selection of sockets allows controlled torque application and precise engagement with spline-headed bolts and nuts in automotive, mechanical and maintenance work.

Advantages

The sockets deliver precise fit to spline fasteners to reduce rounding and slipping. Multiple drive sizes allow use with a wide range of ratchets and torque wrenches, improving versatility on mixed tool sets. The ten-socket range covers common metric sizes from small M4 fasteners up to M18, making the kit useful for many repair and assembly tasks. The compact set is easy to store and transport.

Suitable for

• Automotive repair and engine maintenance involving spline bolts
• Mechanical assembly and disassembly where controlled torque is required
• Workshop and field maintenance tasks with mixed fastener sizes
• Precision servicing of machinery and equipment that use spline fittings

Key specifications

• Drive sizes: 1/4", 3/8", 1/2" compatible with corresponding ratchets and torque tools
• Socket type: spline sockets for spline-headed fasteners
• Metric coverage: sizes M4 through M18
• Quantity: 10 sockets covering the specified metric range
• Intended use: hand-operated ratchet and torque applications

How to use

Select the socket matching the spline fastener size, fit it onto the appropriate drive adapter or ratchet (1/4", 3/8" or 1/2"), and engage the socket squarely with the fastener head. Apply torque smoothly and avoid sudden impacts; when using a torque wrench, set the required torque value and tighten until the wrench indicates the target. After use, clean debris from the sockets and store them in their case or toolbox to prevent damage and corrosion.

Usage recommendations

Use the correct drive size and socket size for each fastener to minimise wear. When precise torque control is required, use a calibrated torque wrench and follow manufacturer torque specifications for bolts and assemblies. Inspect sockets periodically for rounding or wear and replace any damaged pieces to ensure safe and accurate operation.