Mitutoyo 101185 Drop Indicator Shell Contact Point

Product Description

The MITUTOYO 101185 is a shell-style contact point designed for use with drop indicators and dial gages. Machined from solid carbide, this contact point threads into the indicator spindle via a 4-48 thread and provides a 0.2-inch contact diameter across a 0.5-inch contact point length. Its carbide construction resists wear during repeated measurement cycles, making it well suited for production inspection environments where contact point longevity matters. Metrology technicians, quality control inspectors, and precision machining shops rely on this type of accessory to maintain accurate gage readings across high-volume setups.

This contact point is rated for use with AGD Groups 1, 2, 3, and 4 dial gages, covering the most common range of American Gage Design indicator body sizes found in shop and lab environments. It is appropriate for both bench setups and surface plate work where a standard shell-style tip is required. The 4-48 thread is the industry-standard thread for AGD-compatible drop indicator contact points, so this part fits directly without adapters in most setups.

Key Features

• Solid carbide construction for extended wear life in high-cycle measurement applications
• 4-48 thread size matches AGD-standard indicator spindles
• 0.2-inch contact diameter for precise point contact on measured surfaces
• 0.5-inch contact point length provides consistent gage reach
• Compatible with AGD Groups 1, 2, 3, and 4 drop indicators
• Shell contact point style suitable for mounting on standard dial gage spindles

Compatibility

Designed for use with AGD 1, 2, 3, and 4 drop indicators and dial gages that accept a standard 4-48 threaded contact point.

Installation Notes

Installation is performed by metrology technicians or machine operators familiar with precision measurement tools. Before replacing a contact point, remove the indicator from any active gage stand or fixture and zero out any spring tension on the spindle. Thread the contact point in by hand first to avoid cross-threading the 4-48 thread, then snug with the appropriate wrench without over-torquing, as carbide tips are brittle and the spindle threads are fine-pitched. Verify gage calibration after contact point replacement before returning the instrument to service.