Value Collection 1230-4213 5C Round Collet 8mm Steel

Product Description

The VALUE COLLECTION 1230-4213 is a 5C round collet machined from steel for use in 5C-compatible spindles and collet chucks on lathes, grinders, and rotary fixtures. It accepts workpieces up to 8.00 millimeters and delivers a total indicated runout (TIR) of 0.015 millimeters, providing the concentricity required for precision turning and grinding operations. 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. At 0.5 pounds, it is a standard-weight collet suited for production and tool-room environments. Machinists and machine tool technicians are the primary installers.

This collet is intended for use in production turning centers, manual engine lathes, and surface or cylindrical grinding machines that accept the 5C collet system. The round profile is the most common 5C style and is used to grip round bar stock, pins, and shaft workpieces for facing, turning, drilling, and light milling operations. It is a practical choice for shops running mixed-diameter work in the small-diameter range on 5C-equipped machines.

Key Features

• Round collet profile for gripping cylindrical workpieces up to 8.00 millimeters
• Steel construction provides durability under repeated clamping cycles
• TIR of 0.015 millimeters supports concentricity-sensitive operations
• Internal thread: 1.041 inches at 24 threads per inch
• External thread: 1.242 inches at 20 threads per inch
• Standard 5C form factor fits a wide range of compatible spindles and closers

Compatibility

Designed as an OEM-style replacement and production collet for machine tools equipped with a standard 5C collet spindle system.

Installation Notes

Installation is performed by a qualified machinist or machine tool technician. Before inserting or removing the collet, disengage the machine spindle drive and confirm the machine is fully powered down and locked out per facility lockout/tagout procedures. Inspect the collet bore, taper, and threads for chips or burrs before seating, as contamination directly affects runout. Do not exceed the rated capacity of the collet or apply impact force during installation.