Value Collection 230-4103 5C Round Steel Collet 3/64 in

Product Description

The VALUE COLLECTION 230-4103 is a 5C round steel collet designed for use in 5C collet chucks, closers, and fixtures found on lathes, indexers, and grinding machines. Sized at 3/64 inch, it holds small-diameter round workpieces with a total indicated runout (TIR) of 0.0005 inches, making it well suited for precision turning and grinding operations where concentricity matters. The internal thread is 1.041-24 and the external thread is 1.242-20, conforming to standard 5C interface dimensions. Machinists and tool room technicians install this collet as part of routine workholding setup in both production and job-shop environments.

This collet is intended for use in any machine tool or fixture that accepts the standard 5C collet format. Typical applications include CNC and manual lathes, rotary indexing fixtures, collet blocks, and bench-mounted collet closers used in light machining, watchmaking, and instrument work. The 3/64 inch bore size targets very small-diameter round stock and is a common requirement in precision parts manufacturing and repair shops.

Key Features

• 3/64 inch round bore for gripping small-diameter round workpieces
• 0.0005 inch TIR for high concentricity in precision machining operations
• 1.041-24 internal thread and 1.242-20 external thread match standard 5C interface specifications
• Steel construction provides durability under repeated clamping cycles
• Standard 5C form factor fits a wide range of compatible machine tool accessories

Compatibility

Designed as an OEM-style replacement and standard-fitment collet for machine tools and fixtures that accept the 5C collet format with 1.041-24 internal and 1.242-20 external thread dimensions.

Installation Notes

Installation is performed by qualified machinists or tool room technicians. Before inserting or removing the collet, ensure the machine spindle is fully stopped and the collet closer or chuck is fully released. Inspect the collet bore, taper, and threads for chips or damage before seating. Do not exceed the rated bore size when chucking workpieces, as overloading the collet will degrade TIR and shorten service life.