Spi 20-653-2 Ball Contact Point Steel Teclock Test Indicators

Product Description

The SPI 20-653-2 is a ball-style contact point designed for use with Teclock test indicators. It features a 0.118-inch (3.00 mm) ball diameter and a contact point length of 0.52 inches, machined from steel for durability and dimensional stability under repeated measurement cycles. This replacement contact point threads into compatible indicator spindles and restores measurement function when the original tip is worn or damaged. Dimensional inspection technicians, machinists, and calibration professionals use contact points like this to maintain the accuracy of their test indicators on the shop floor or in a metrology environment.

This contact point is suited for use with Teclock test indicators in precision measurement applications including runout checks, surface comparison, part alignment, and fixture verification. Its compact steel ball tip is appropriate for contacting flat, curved, or irregular surfaces where a standard pointed stylus would not seat correctly. The small ball diameter makes it well suited for fine-surface work where contact geometry matters.

Key Features

• Steel construction provides wear resistance and dimensional stability during repeated contact cycles
• 0.118-inch (3.00 mm) ball diameter for accurate surface contact on flat and contoured workpieces
• 0.52-inch contact point length for standard reach in typical indicator setups
• Designed as a direct replacement tip to restore test indicator function without full instrument replacement
• Compact and lightweight at 0.1 pounds, adding minimal mass to the indicator spindle

Compatibility

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

Installation Notes

Installation is performed by qualified technicians or machinists familiar with precision measuring instruments. Before replacing the contact point, remove the test indicator from active service and secure it in a holding fixture or vise jaw with soft jaw inserts to avoid damaging the instrument body. Thread the contact point into the indicator spindle by hand first to avoid cross-threading, then snug with the appropriate small wrench if required. Verify the indicator reads zero correctly against a known reference surface after installation.