Value Collection 530-4220 5C Square Steel Collet 5/16 in

Product Description

The VALUE COLLECTION 530-4220 is a 5C square steel collet designed for use in compatible 5C collet chucks and closers on manual and CNC lathes, indexers, and rotary tables. Sized for 5/16-inch square stock, it features a total indicated runout (TIR) of 0.0005 inches, providing the concentricity control needed for precision turning and machining operations. The internal thread measures 1.041 inches-24 and the external thread measures 1.242 inches-20, conforming to standard 5C collet geometry. Machined from steel for durability under repeated clamping cycles, this collet is suited for production and job-shop environments where consistent gripping of square bar stock is required.

This collet is intended for use in any machine tool or fixture that accepts the standard 5C collet format. Typical applications include holding square stock for secondary operations on lathes, collet blocks on milling machines, and rotary indexing fixtures. It is appropriate for both production machining and toolroom work where square workpieces must be held with precision and repeatability.

Key Features

• 5/16-inch square collet size for gripping square bar stock
• 0.0005-inch TIR for precise, repeatable workholding
• Standard 5C collet thread dimensions: 1.041 inches-24 internal, 1.242 inches-20 external
• Steel construction for durability under continuous clamping use
• Compatible with standard 5C collet chucks, closers, and collet blocks

Compatibility

Designed as a standard 5C-format replacement or additional collet for use with any machine tool or workholding fixture that accepts 5C collets with 1.041 inches-24 internal and 1.242 inches-20 external thread specifications.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Before inserting or removing a collet, ensure the machine spindle is fully stopped and all power is locked out per shop lockout/tagout procedures. Inspect the collet bore and chuck taper for chips or damage before seating the collet. Do not exceed the rated capacity of the collet closer or chuck when applying clamping force.