Spi 21-059-1 Ball Contact Point Carbide Interapid

Product Description

The SPI 21-059-1 is a carbide ball contact point designed for use with test indicators in precision measurement applications. The contact point features a 0.059 inch ball diameter and an overall contact point length of 0.812 inches, providing accurate and repeatable surface contact during inspection routines. The carbide construction delivers excellent wear resistance, making it well-suited for high-cycle measurement environments where tip integrity directly affects gauge accuracy. This contact point is installed and used by machinists, quality control technicians, and metrology professionals working in manufacturing, toolroom, or inspection lab settings.

This contact point is intended for use with Interapid test indicators. It is a standard replacement or supplemental tip for shops and inspection departments that rely on Interapid indicators for runout checks, surface comparison, bore alignment, and similar precision measurement tasks. The 0.059 inch ball diameter suits fine-detail work where a small contact radius is needed for accurate stylus engagement on tight-tolerance features.

Key Features

• 0.059 inch carbide ball tip for precise, wear-resistant surface contact
• 0.812 inch contact point length for standard Interapid indicator compatibility
• Carbide construction resists wear during high-frequency measurement cycles
• Small ball diameter suited for fine-detail and tight-tolerance inspection work
• Direct replacement tip for Interapid test indicators

Compatibility

Designed for use with Interapid test indicators.

Installation Notes

Contact points are installed and replaced by machinists or metrology technicians. Power-down or lock-out procedures are not required for this hand-tool accessory. Ensure the indicator is secure in its holder and the spindle is not under load before swapping contact points. Use the correct wrench or driver to avoid damaging the indicator spindle threads during installation.