Blue Spot Tools 8 Piece 1/2" Impact Spline Socket Set (M5-M18) 01501

Blue Spot Tools 8 Piece 1/2" Impact Spline Socket Set (M5-M18) 01501

MPN: 01501

Barcode: 5028734015010

Size: 78mm (socket length)

Weight: 1.12kg

Overview:

This Blue Spot Tools 8 Piece 1/2" impact spline socket set covers the full metric range from M5 to M18. Each bit socket is manufactured from chrome molybdenum (CrMo) steel and features a phosphorised black finish for corrosion protection.

All eight sockets measure 78mm in length and attach to any standard 1/2" drive ratchet, bar, or extension. The set is also suited for use with air-powered impact tools. Every socket in the set carries the Blue Spot Tools Manufacturer's Lifetime Guarantee.

What's Included

• 1/2" Impact Spline Bit Sockets (x8): M5, M6, M8, M10, M12, M14, M16, M18

Key Features and Benefits

• Chrome Molybdenum Steel: CrMo absorbs the shock and vibration of impact tools without cracking or shattering.
• Corrosion Protection: The phosphorised black coating guards the sockets against rust and surface deterioration.
• 1/2" Drive Compatibility: Connects directly to standard 1/2" drive ratchets, breaker bars, and extensions - no adapters needed.
• Air Tool Ready: Suited for use with air-powered impact wrenches and guns as well as manual drive tools.
• M5 to M18 Coverage: Eight sizes in one set cover the most common spline fastener range found in automotive and mechanical work.
• Lifetime Guarantee: Covered by the Blue Spot Tools Manufacturer's Lifetime Guarantee.

Specs & Attributes

• Drive Size: 1/2"
• Socket Type: Impact spline bit socket
• Material: Chrome Molybdenum (CrMo)
• Finish: Phosphorised black
• Socket Length: 78mm
• Size Range: M5-M18
• Number of Pieces: 8
• Weight: 1.12kg

Typical Applications

• Removing and refitting drivetrain and axle bolts on cars and vans
• Brake calliper and suspension fastener work on European vehicles
• Cylinder head bolt removal and installation
• Transmission bell housing bolt work
• High-torque fastener removal where spline-headed bolts are specified
• Heavy machinery maintenance where vibration and high clamping loads are present

How to Use

• Select the correct size: Match the socket to the spline fastener head - sizes run from M5 to M18.

• Attach to your drive tool: Push the socket firmly onto a 1/2" drive ratchet, bar, or impact wrench.

• Seat the socket: Position the socket fully onto the fastener head before applying any torque.

• Apply torque: Operate the ratchet or activate the impact tool to tighten or loosen the fastener.

• Remove and store: Pull the socket clear once the job is done and return it to the tray.

Frequently Asked Questions (FAQs)

• What is a spline socket?
  A spline socket - also called a triple square or XZN socket - drives fasteners with a 12-point spline head. The internal splines create more contact area than a standard hex socket, allowing higher torque without rounding the fastener.

• What is the difference between a spline socket and a hex socket?
  A hex socket grips the corners of a fastener, which raises the risk of rounding under high torque. A spline socket grips across the flat faces of the fastener head instead, spreading the load more evenly. This reduces the chance of rounding, especially on tight or worn fasteners.

• Can spline sockets be used on standard hex fasteners?
  Yes. Spline sockets can also drive 4-point, 6-point (hex), and 12-point (bi-hex) fasteners in addition to dedicated spline heads. Where a purpose-specific socket fits correctly, most mechanics prefer to use it rather than a spline socket.

• Why are impact sockets made from chrome molybdenum rather than chrome vanadium?
  Chrome molybdenum (CrMo) is more ductile than chrome vanadium (CrV). Under repeated impact loads, CrMo bends slightly rather than shattering - which is far safer when used with powered tools. Chrome vanadium is harder but more brittle, making it better suited to hand sockets used with manual ratchets.

• Which vehicles commonly use spline fasteners?
  Spline fasteners are most common on European vehicles, particularly VAG group models from Volkswagen, Audi, BMW, and Mercedes-Benz. They typically appear on cylinder head bolts, transmission bell housing bolts, axle bolts, and brake calliper brackets.

Summary

This Blue Spot Tools 8 Piece 1/2" spline socket set provides eight CrMo bit sockets from M5 to M18, each measuring 78mm in length. The phosphorised black finish protects against corrosion, and all sockets fit standard 1/2" drive tools as well as air-powered impact wrenches. The complete set is covered by the Blue Spot Tools Manufacturer's Lifetime Guarantee.