Value Collection 230-4144 5C Round Steel Collet 11/16 in

Product Description

The VALUE COLLECTION 230-4144 is a 5C-style round steel collet designed for use in lathes, collet chucks, and other 5C-compatible workholding setups. It accepts round stock at 11/16 inches and delivers a total indicator runout (TIR) of 0.0005 inches, making it suitable for precision turning and machining operations where concentricity matters. The internal thread is 1.041 inches-24 and the external thread is 1.242 inches-20, conforming to standard 5C collet dimensions. Machinists and toolroom professionals install this collet when holding round bar stock or finished parts that require accurate, repeatable positioning during machining.

This collet fits standard 5C collet-ready spindles and chucks found on engine lathes, turret lathes, grinding machines, and manual or CNC collet closers. It is intended for shops and toolrooms running round stock at the 11/16-inch diameter. The steel construction provides the rigidity and wear resistance expected in production and job-shop environments where collets are cycled frequently.

Key Features

• 5C collet style with round bore sized at 11/16 inches for standard round stock
• 0.0005-inch TIR for precision concentricity in turning and grinding applications
• Internal thread: 1.041 inches-24 conforms to 5C collet standards
• External thread: 1.242 inches-20 conforms to 5C collet standards
• Steel construction for durability and resistance to deflection under clamping load

Compatibility

Designed as a standard 5C-style round collet replacement or addition for any 5C-compatible collet chuck, collet closer, or lathe spindle accepting the 1.041-24 internal and 1.242-20 external thread specification.

Installation Notes

Installation is performed by qualified machinists familiar with 5C collet systems. Ensure the spindle or collet closer is fully stopped and de-energized before inserting or removing the collet. Inspect the collet bore and mating spindle surfaces for chips, burrs, or debris before seating — contamination directly affects TIR performance. Do not exceed the rated collet capacity, as oversize stock will damage the collet and the spindle nose.