Value Collection 230-4208 5C Round Collet 8mm Steel

Product Description

The VALUE COLLECTION 230-4208 is a 5C round collet machined from steel for use in 5C-compatible spindles and collet chucks on lathes and grinding machines. It accepts workpieces at an 8.00 mm collet size and holds to a total indicator runout (TIR) of 0.015 mm, making it suitable for precision turning, grinding, and secondary operations where consistent concentricity is required. 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. This collet is installed by machinists and tool room technicians in production and job-shop environments.

This 5C round collet is designed for use in lathes, cylindrical grinders, and indexing fixtures that accept the standard 5C collet format. It is suited to both production runs and low-volume precision work where repeatable part holding is critical. The 8.00 mm capacity targets small-diameter round stock and is a common size in job shops running metric and mixed-dimension workpieces on 5C-equipped machine tools.

Key Features

• 5C round collet format for broad compatibility with 5C spindles and chucks
• 8.00 mm collet capacity for small-diameter round workpieces
• TIR of 0.015 mm for precision concentricity in turning and grinding operations
• Steel construction for durability under repeated clamping cycles
• Internal thread: 1.041 inches at 24 TPI
• External thread: 1.242 inches at 20 TPI

Compatibility

Designed as an OEM-style replacement or direct-use collet for machine tools equipped with a standard 5C collet spindle, including lathes, grinders, and collet fixtures that accept the 5C format.

Installation Notes

Installation should be performed by a qualified machinist with the machine fully powered down and the spindle locked. Collet threads and the spindle bore should be cleaned and inspected for burrs or debris before insertion to protect thread integrity and maintain TIR specification. Use appropriate collet closing tools or a drawbar wrench sized for the spindle — do not overtighten, as this can distort the collet and damage the spindle nose. Verify runout with a dial indicator after seating before beginning production cuts.