Value Collection 530-4340 5C Hex Collet 5/8 Inch

Product Description

The VALUE COLLECTION 530-4340 is a 5C hex collet machined from steel for use in 5C-compatible spindles and collet chucks found on lathes, collet closers, and indexing fixtures. The collet accepts 5/8 inch hex stock and holds to a total indicator runout (TIR) of 0.0005 inches, supporting accurate, repeatable workholding for turning, milling, and secondary operations on hex-profile parts. 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 and tool room technicians rely on this collet type when tight TIR tolerances are required for production or precision work.

This collet is suited for machine shops running hex-bar stock at 5/8 inch across flats. Typical applications include CNC lathes, manual engine lathes, and rotary collet fixtures where a hex profile must be gripped without slipping or marring. The 5C form factor is one of the most widely used collet standards in North American job shops, making this collet a common replacement or addition to existing tooling sets.

Key Features

• 5C hex collet designed to grip 5/8 inch hex stock securely
• TIR of 0.0005 inches for precise, repeatable workholding
• Internal thread size: 1.041 inches at 24 threads per inch
• External thread size: 1.242 inches at 20 threads per inch
• Steel construction for durability under continuous machining loads
• Compatible with the broad 5C collet ecosystem of spindles and accessories

Compatibility

Designed as a standard 5C-pattern hex collet replacement suitable for use in any machine spindle or collet closer that accepts the 5C collet form factor.

Installation Notes

Installation is performed by a machinist or tool room technician. Ensure the spindle or collet closer is fully de-energized and at rest before inserting or removing the collet. Clean the collet bore and spindle seat of chips and debris before seating the collet to maintain TIR accuracy. Do not over-torque the collet closer drawbar beyond the machine manufacturer's specified range.