Starrett 65868 Ball Contact Point 2mm Carbide Dial Test Indicator

Product Description

The STARRETT 65868 is a carbide ball contact point designed for use with dial test indicators in precision measurement applications. The ball tip measures 2 mm (0.0787 inches) in diameter, and the contact point has an overall length of 15.88 mm. Carbide construction provides exceptional wear resistance, maintaining measurement accuracy through repeated contact cycles. This contact point is used by machinists, quality control technicians, and toolroom professionals who require reliable, repeatable readings when checking runout, surface flatness, or part alignment.

This contact point is suited for precision metrology work in machine shops, manufacturing environments, and inspection stations. It is intended for use in setups where a ball-style tip is preferred over a flat or chisel contact, particularly when checking curved surfaces, bores, or contoured workpieces. The carbide tip resists deformation and maintains geometric integrity under normal inspection loads, making it appropriate for both light production measurement and close-tolerance toolroom work.

Key Features

• Carbide ball tip for long service life and resistance to wear
• 2 mm ball diameter provides a defined contact geometry for repeatable readings
• 15.88 mm contact point length suits standard indicator stem mounting
• Compatible with Starrett 708MAZ, 708MACZ, 709MAZ, and 709MACZ dial test indicators
• Point Identification PT23953 for cross-reference and replacement ordering
• Sold individually as a single replacement contact point

Compatibility

Designed for use with Starrett 708MAZ, 708MACZ, 709MAZ, and 709MACZ dial test indicators as stated by the manufacturer.

Installation Notes

Contact point replacement is typically performed by a machinist or metrology technician. Before replacing the contact point, remove the indicator from any active fixture or setup and ensure the indicator spindle is in its neutral position. Use the appropriate wrench size for the contact point thread to avoid overtightening, which can damage the indicator spindle threads. Handle carbide-tipped contact points carefully to prevent chipping the ball during installation or storage.