Value Collection 530-4344 5C Hex Steel Collet 11/16 in

Product Description

The VALUE COLLECTION 530-4344 is a 5C hex collet machined from steel, designed to grip hex-profile workpieces in 5C-compatible spindles, closers, and fixtures. The collet holds an 11/16 inch hex capacity and delivers a total indicator runout (TIR) of 0.0005 inches, providing the concentricity required for precision turning, milling, and secondary 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, conforming to standard 5C spindle dimensions. Machinists and toolroom technicians install this collet in manual and CNC lathes as well as dedicated collet fixtures for milling operations.

This collet is suited for production and job-shop environments where hex-profile bar stock or pre-formed hex parts must be held accurately for turning, facing, or secondary machining. The hex bore geometry prevents rotation of the workpiece during cutting operations, making it a practical choice for machining bolt blanks, hex rod, and similar stock. It is a single-piece component requiring no additional adapters beyond a standard 5C-equipped spindle or collet fixture.

Key Features

• 11/16 inch hex bore capacity for positive grip on hex-profile workpieces
• 0.0005 inch TIR for high concentricity in precision machining applications
• 1.041 inch-24 internal thread meets standard 5C spindle specifications
• 1.242 inch-20 external thread for use with standard 5C closers and fixtures
• Steel construction for durability in production machining environments

Compatibility

Designed as a standard 5C-pattern hex collet compatible with 5C collet-equipped lathes, collet closers, and indexing fixtures accepting the 1.041 inch-24 internal and 1.242 inch-20 external thread specifications.

Installation Notes

Installation is performed by qualified machinists following standard 5C collet change procedures. Ensure the spindle or collet closer is fully stopped and de-energized before inserting or removing the collet. Inspect the collet bore, taper, and threads for chips or burrs before seating; debris on the mating surfaces will increase runout and can damage the spindle nose. Do not exceed the rated hex capacity, as oversize stock will prevent the collet from closing properly and may damage the closer mechanism.