Value Collection 230-4145 5C Steel Collet 45/64 in Round

Product Description

The VALUE COLLECTION 230-4145 is a 5C-style steel collet designed for round workpiece clamping in lathes, collet chucks, and spin fixtures that accept the 5C collet standard. This collet holds a 45/64-inch round stock diameter and delivers a total indicator runout (TIR) of 0.0005 inches, making it suitable for precision turning, grinding, and secondary operations where concentricity matters. The internal thread measures 1.041 inches at 24 threads per inch and the external thread measures 1.242 inches at 20 threads per inch. Machinists, tool room operators, and production turning specialists install this collet as part of a standard 5C workholding setup on manual and CNC lathes.

This collet fits production and job-shop environments where 5C-compatible spindles are in use. It is appropriate for round bar stock, turned blanks, or any cylindrical workpiece at the 45/64-inch clamping diameter. Applications include OD turning, facing, drilling, tapping, and light grinding operations on lathes or dedicated collet-closer machines. The steel construction handles the clamping forces and tool loads typical of general-purpose machining without deforming under normal use cycles.

Key Features

• 45/64-inch round clamping capacity for 5C-standard collet systems
• 0.0005-inch TIR for precision concentricity in turning and grinding operations
• 1.041 inches at 24 TPI internal thread for 5C closer compatibility
• 1.242 inches at 20 TPI external thread matches standard 5C spindle noses
• Steel construction provides durability under repeated clamping cycles

Compatibility

Designed as an OEM-style replacement or production collet for machine tool spindles and collet chucks built to the 5C collet standard accepting a 45/64-inch round capacity.

Installation Notes

Installation is performed by qualified machinists or tool room technicians. Power down and de-energize the machine spindle completely before inserting or removing the collet. Ensure the collet bore, collet closer threads, and spindle taper are clean and free of chips before seating the collet to protect the TIR specification. Do not use the collet to clamp workpieces outside the rated 45/64-inch diameter, as oversize stock can crack the collet body.