Spi Z6300 Test Indicator Ball Contact Point Ruby

Product Description

The SPI Z6300 is a ruby ball contact point designed for use with precision test indicators in metrology and dimensional inspection applications. The contact point features a 2.00 mm ruby ball tip and measures 0.5 inches in overall contact point length. Ruby is selected for its hardness and wear resistance, making it well suited for repeated contact measurements on hardened surfaces, ground bores, and precision machined features. This replacement contact point threads into compatible test indicator stems and is installed by metrology technicians, quality control inspectors, and tool room machinists who require reliable, repeatable contact geometry for surface deviation and runout measurement work.

This contact point is intended for bench, fixture, and machine-mounted test indicator setups in precision measurement environments. It is commonly used in quality control labs, tool rooms, and on the shop floor wherever a standard ball-style contact point is needed for bore, slot, or surface inspection. The Z6300 is specified for use with Brown Sharpe test indicators, making it a direct replacement or spare for those instruments.

Key Features

• Ruby ball tip provides excellent hardness and wear resistance for repeated precision contact
• 2.00 mm ball diameter for consistent, defined contact geometry
• 0.5 inch contact point length suits standard test indicator reach requirements
• Ball style tip appropriate for surface, bore, and runout measurement applications
• Designed for use with Brown Sharpe test indicators

Compatibility

Designed for use with Brown Sharpe test indicators as stated by the manufacturer.

Installation Notes

Contact points are installed and serviced by metrology technicians or quality control personnel. Before replacing a contact point, ensure the test indicator is removed from any active fixture or spindle to prevent damage to the instrument or injury. Contact points typically thread into the indicator stylus stem — use proper fit and do not overtighten, as indicator stems are precision components. Verify seating and runout of the new contact point before returning the indicator to service.