Mitutoyo 102826 Ball Contact Point 0.1181 in Steel

Product Description

The MITUTOYO 102826 is a ball-style contact point designed for use with dial test indicators in precision measurement applications. The contact point features a 3.00 mm (0.1181 inch) steel ball tip and a total contact point length of 9.20 mm (0.3622 inches). It serves as the physical interface between the indicator spindle and the workpiece surface, transmitting minute deflections to the indicator dial. Machinists, tool-and-die technicians, and metrology professionals install this contact point when measuring runout, surface variation, or workpiece alignment on manual or CNC setups.

This contact point is suited for bench inspection, machine tool setup, and fixture verification tasks in both production and toolroom environments. It threads onto the spindle of compatible Mitutoyo dial test indicators and is appropriate for applications requiring a small-radius ball tip to contact curved or recessed surfaces. Its compact length and standardized steel construction make it a direct-fit service replacement or backup item for metrology kits.

Key Features

• 3.00 mm (0.1181 inch) ball diameter for contact with curved, concave, or recessed surfaces
• 9.20 mm (0.3622 inch) contact point length for standard-reach applications
• Steel construction for durability and dimensional stability during repeated use
• Threaded spindle attachment compatible with Mitutoyo 513 Series dial test indicators
• Sold individually — direct OEM-style replacement for worn or damaged contact points

Compatibility

Designed for use with Mitutoyo 513 Series Dial Test Indicators.

Installation Notes

Installation is performed by qualified machinists or metrology technicians. Before swapping contact points, remove the indicator from any active fixturing or magnetic base to avoid accidental movement. Thread the contact point onto the indicator spindle by hand until snug, taking care not to cross-thread or overtighten, which can affect calibration. After installation, verify indicator zero and stylus deflection range before returning the instrument to service.