Value Collection 230-4432 5C Expanding Collet

Product Description

The VALUE COLLECTION 230-4432 is a 5C expanding collet machined from steel for use in manual and CNC lathes, collet chucks, and collet fixtures that accept the 5C collet standard. Expanding collets grip the internal bore of a workpiece rather than the outside diameter, making this type the right choice when the part must be held from the inside during turning, grinding, or milling operations. The head measures 2.5 inches in diameter and 1.5 inches in length. Concentricity is held to 0.0020 inches TIR, which supports accurate, repeatable setups across production runs. Machinists, tool-and-die makers, and CNC operators are the primary installers of this tooling component.

This expanding collet is suited for machine shop environments — both job shops and production facilities — where workpieces must be held from an internal diameter. The grip range spans a minimum of 0.7500 inches (3/4 inch) up to a maximum of 2.4375 inches (2-7/16 inch), accommodating a useful spread of bore sizes in a single collet body. The internal thread is 1.041 in-24 and the external thread is 1.242 in-20. It is appropriate for precision turning, grinding, and secondary operations where bore-referenced fixturing is required.

Key Features

• Expanding collet design grips workpiece from the internal bore for bore-referenced fixturing
• Steel construction provides durability and resistance to wear under repeated clamping cycles
• 0.0020 inch TIR concentricity for accurate, repeatable part location
• Grip range from 0.7500 to 2.4375 inches covers a broad spread of internal diameters
• Head diameter of 2.5 inches and head length of 1.5 inches match standard 5C tooling envelopes
• Internal thread 1.041 in-24 and external thread 1.242 in-20 for secure collet chuck engagement

Compatibility

Designed as an OEM-style replacement or direct-fit addition for machine tool spindles, collet chucks, and fixtures built to the 5C collet standard.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. The spindle or collet chuck must be fully stopped and the machine locked out before inserting or removing the collet. Inspect the collet bore and mating chuck surfaces for chips or burrs before seating the collet to avoid damage to the thread engagement or TIR accuracy. Torque the collet closer to the chuck manufacturer's specified value using the appropriate spanner or draw-bar tool.