Spi 22-000-4 Test Indicator Ball Contact Point

Product Description

The SPI 22-000-4 is a ball-style contact point designed for use with dial test indicators in precision measurement applications. The contact point features a 0.039-inch (1.00 mm) ball diameter and a contact point length of 0.8 inches (20.30 mm), with a matching tip diameter of 0.039 inches. Constructed from stainless steel, the 22-000-4 provides corrosion resistance and durability through repeated use. It weighs 0.01 pounds and is a direct replacement-style accessory for trade and metrology professionals who require accurate surface contact during inspection and gauging work.

This contact point is suited for precision inspection tasks in manufacturing, machining, and quality control environments. It is compatible with the SPI Integral Series of test indicators and is appropriate for use on surfaces where a small ball diameter is needed to access tight features, curved surfaces, or internal contours. Metrology technicians, machinists, and quality control inspectors are the primary users of this type of contact point.

Key Features

• Ball diameter of 0.039 inches (1.00 mm) for contact in tight or curved geometries
• Contact point length of 0.8 inches (20.30 mm) for reach in confined inspection areas
• Stainless steel construction resists corrosion and wear through repeated gauge use
• Tip diameter of 0.039 inches matches ball diameter for consistent contact geometry
• Lightweight at 0.01 pounds, minimizing added mass on sensitive indicator mechanisms
• Sold individually, compatible with SPI Integral Series test indicators

Compatibility

Designed for use with the SPI Integral Series of test indicators.

Installation Notes

Contact points are typically installed and removed by metrology technicians or machinists using the threaded stem connection standard to dial test indicators. Power down or de-energize any automated fixture before handling the indicator or swapping contact points. Avoid overtightening the contact point stem, as this can damage indicator threads. Verify the replacement contact point thread specification matches the indicator before installation.