Starrett 70790 Drop Indicator Contact Point 4-48 Agd

Product Description

The STARRETT 70790 is a drop indicator contact point designed for use with AGD dial indicators in precision measurement applications. Machined from steel, this contact point features a 4-48 thread size and a contact point length of 9.53 mm. The overall length measures 0.25 inches (6.30 mm), with a body diameter of 9.42 mm (3/8 inch fraction). It is a direct-fit replacement-style accessory installed by machinists, metrology technicians, and calibration professionals working with standard AGD-style dial indicators on the shop floor or in the inspection room.

This contact point is suited for dimensional inspection work in manufacturing, toolroom, and quality control environments. It threads directly onto AGD dial indicators and is appropriate for applications requiring repeatable surface contact with workpieces during runout, flatness, or positional measurements. The steel construction provides durability across repeated use cycles on metal surfaces. It ships as a single unit and is compatible with indicators that accept the standard 4-48 threaded contact point interface.

Key Features

• Steel contact point material for durability in industrial measurement environments
• 4-48 thread size fits standard AGD dial indicator stems
• Contact point length of 9.53 mm for consistent surface engagement
• Body diameter of 9.42 mm (3/8 inch) for stable seating
• Overall length of 0.25 inches (6.30 mm) for compact fitment
• Single-unit packaging suits individual replacement needs

Compatibility

Designed for use with AGD dial indicators that accept a 4-48 threaded contact point, as specified by the manufacturer.

Installation Notes

Installation is performed by metrology technicians or machinists familiar with dial indicator maintenance. Before replacing the contact point, remove the indicator from the measuring fixture and ensure it is not under spring load. Thread the contact point in by hand to avoid cross-threading the 4-48 stem, then snug with the appropriate small wrench. Do not overtighten, as this can damage the indicator stem threads.