Mitutoyo 101184 Drop Indicator Shell Contact Point 4-48

Product Description

The MITUTOYO 101184 is a shell-style contact point designed for drop indicators used in precision measurement applications. Machined from solid carbide, this contact point threads into the indicator spindle via a 4-48 thread and presents a 0.2-inch measurement diameter with a contact point length of 0.1563 inches. Its carbide construction resists wear and maintains dimensional stability under repeated contact cycles, making it a reliable replacement or spare for metrology technicians and quality control professionals. This part ships individually and is intended for use in controlled measurement environments such as inspection benches, CMM setups, and production floor gaging stations.

This contact point is rated for use with AGD Group 1, 2, 3, and 4 dial indicators. It is well suited for dimensional inspection tasks in manufacturing, tooling, and machining environments where consistent probe geometry is required. Machinists, quality technicians, and metrology lab personnel are the primary installers and users. The shell-style design allows for secure seating against the indicator spindle nose, ensuring repeatable contact geometry during measurement cycles.

Key Features

• Solid carbide point material for extended wear life in high-cycle measurement applications
• 4-48 threaded shank for direct installation into compatible AGD indicator spindles
• 0.2-inch (5.00 mm) measurement contact diameter for standard probe geometry
• 0.1563-inch contact point length for precise dimensional clearance in tight-tolerance gaging setups
• Compatible with AGD Groups 1, 2, 3, and 4 dial indicators
• Shell-style form factor suitable for mounting on dial gages across a range of inspection fixtures

Compatibility

Designed for use with AGD Group 1, 2, 3, and 4 dial indicators equipped with a 4-48 threaded spindle nose.

Installation Notes

Installation is performed by quality technicians or metrology personnel using standard finger-tightening or a small spanner wrench appropriate for the 4-48 thread. Before replacing a contact point, ensure the indicator is removed from any active gaging fixture to prevent spindle damage. Do not overtighten the threaded shank, as this can damage the fine 4-48 thread on the indicator spindle. Verify contact point seating and zero the indicator per standard calibration procedure before returning the instrument to service.