Mitutoyo 900393 Drop Indicator Contact Point 3mm

Product Description

The MITUTOYO 900393 is a replacement contact point designed for drop indicators used in precision measurement applications. The contact point features a 3.00 mm ball diameter and a 4-48 threaded portion for secure mounting to compatible indicator stems. This type of replacement part is installed by metrology technicians, quality control inspectors, and tool-and-die professionals who require accurate, repeatable measurements on production floors, inspection stations, and machine tool setups. Keeping a calibrated contact point in good condition is essential for maintaining measurement integrity across surface, bore, and runout inspection tasks.

This contact point is suited for replacement or upgrade use in drop indicator assemblies where the original contact has worn or been damaged. Drop indicators are commonly used in machine shops, inspection labs, and manufacturing environments to measure vertical displacement, part flatness, and positional variation. The 4-48 thread is a standard contact point thread used across a wide range of dial and drop indicator bodies, making this part a practical service replacement for bench and fixture-mounted indicator setups.

Key Features

• 3.00 mm ball diameter for precise point contact during measurement
• 4-48 threaded portion for compatibility with standard drop indicator stems
• Replacement part extends the service life of existing drop indicator assemblies
• Compact and lightweight at 0.02 pounds for minimal influence on indicator performance
• Sold individually, quantity of one per package

Compatibility

Designed as an OEM-style replacement contact point for drop indicators using the standard 4-48 threaded stem connection.

Installation Notes

Installation is performed by metrology or quality control technicians using appropriate wrenches or contact point installation tools. Before replacing the contact point, remove the indicator from any active fixture or measurement setup to avoid damage to the instrument or workpiece. Take care not to overtighten the threaded portion, as doing so can distort the contact point or damage the indicator stem threads. Follow the indicator manufacturer's guidelines for contact point torque and replacement procedures.