Value Collection 230-4142 5C Round Steel Collet 21/32 in

Product Description

The VALUE COLLECTION 230-4142 is a 5C round steel collet designed for use in lathes, collet chucks, and other 5C-compatible workholding setups. It accepts round stock at a 21/32 inch bore size and is manufactured from steel for reliable gripping force and resistance to wear under repeated use. The collet holds a true indicator reading (TIR) of 0.0005 inches, providing the concentricity accuracy required for precision turning, milling, and grinding operations. Installation requires a compatible 5C spindle or chuck body. The internal thread is 1.041-24 and the external thread is 1.242-20, matching standard 5C collet specifications.

This collet is suited for machine shops, tool rooms, and production environments running 5C-compatible equipment. Typical applications include holding round bar stock for turning operations on manual or CNC lathes, as well as secondary operations in collet blocks and indexing fixtures. It is appropriate for both job-shop and production-floor use where consistent grip and repeatable workpiece positioning are required.

Key Features

• 21/32 inch bore diameter for round stock workholding
• 0.0005 inch TIR for precision concentricity
• Steel construction for durability and long service life
• 1.041-24 internal thread — standard 5C specification
• 1.242-20 external thread — standard 5C specification
• 5C collet format compatible with a wide range of lathe spindles and chuck bodies

Compatibility

Designed as a standard 5C-format round collet for use with 5C-compatible lathe spindles, collet chucks, collet blocks, and indexing fixtures that accept the 1.041-24 internal and 1.242-20 external thread standard.

Installation Notes

5C collets are installed and removed by machinists or toolroom technicians using a collet closer or draw bar on the lathe spindle. Power down and lock out the machine before handling the collet or workpiece. Inspect the collet bore and spindle taper for chips or debris before seating — contamination will degrade TIR performance. Do not exceed the collet bore size rating when inserting stock.