Value Collection 1230-4238 5C Round Collet 20.50mm

Product Description

The VALUE COLLECTION 1230-4238 is a 5C round collet machined from steel, designed for use in 5C-compatible collet chucks, closers, and fixtures found on lathes, rotary tables, and grinding machines. The collet accepts a 20.50mm round workpiece and holds a total indicator reading (TIR) of 0.015mm, providing consistent concentricity for turning, milling, and grinding operations. An internal thread size of 1.041 inches-24 and an external thread size of 1.242 inches-20 conform to the standard 5C interface. This collet is a shop-floor workhorse installed by machinists and tool-room technicians in both production and job-shop environments.

This 5C round collet is suited for manual and CNC lathes, collet blocks, spin fixtures, and indexing heads equipped with a 5C nose. It handles round bar stock, pins, shafts, and similar cylindrical workpieces at the 20.50mm nominal capacity. Its steel construction makes it appropriate for general-purpose metalworking applications including turning, threading, and light grinding. The part ships individually and is a direct drop-in for any standard 5C-compatible spindle or closer assembly.

Key Features

• 20.50mm round collet capacity for cylindrical workpieces
• TIR of 0.015mm for repeatable concentricity and workholding accuracy
• Steel construction provides durability in production machining environments
• Internal thread size of 1.041 inches-24 and external thread size of 1.242 inches-20 match the standard 5C interface
• Lightweight at 0.5 pounds for easy handling and quick changeover

Compatibility

Designed as an OEM-style replacement or supplemental collet for machine tools equipped with a standard 5C collet spindle or closer.

Installation Notes

Installation is performed by machinists or tool-room technicians familiar with 5C workholding systems. Before inserting or removing the collet, ensure the machine spindle is fully stopped and the collet closer is released. Inspect the collet bore and spindle nose for chips or burrs before seating the collet, as contamination directly affects TIR. Follow the machine manufacturer's guidelines for closer draw-bar torque and collet maintenance intervals.