Value Collection 530-4248 5C Square Steel Collet 3/4 in

Product Description

The VALUE COLLECTION 530-4248 is a 5C square steel collet designed for use in 5C collet chucks and closers on lathes, indexers, and rotary fixtures. This collet accepts 3/4-inch square workpieces and holds them with a total indicator runout (TIR) of 0.0005 inches, providing the repeatable, precise workholding that precision turning and milling operations demand. Constructed from steel, the 530-4248 features an internal thread size of 1.041 inches-24 and an external thread size of 1.242 inches-20, conforming to standard 5C collet geometry for direct drop-in use on compatible spindles. Machinists and toolroom technicians install this collet in production and job-shop environments where consistent grip on square stock is required.

This collet is suited for use in manual and CNC lathes, collet blocks, spin indexers, and other 5C-compatible workholding equipment. It is appropriate for light to medium-duty turning, facing, and secondary operations on square bar stock up to 3/4 inch. The square bore geometry prevents workpiece rotation during machining, making it a common choice for operations that require indexed or oriented clamping on square material in both production and prototype settings.

Key Features

• 3/4-inch square bore for positive, rotation-resistant grip on square stock
• 0.0005-inch TIR for precise, repeatable workholding
• Steel construction for durability in machine shop environments
• 1.041 inches-24 internal thread matches standard 5C collet specification
• 1.242 inches-20 external thread for standard 5C closer and chuck compatibility
• Package quantity of 1 for single-unit purchase flexibility

Compatibility

Designed as a standard 5C-specification square collet for use in any 5C collet chuck, collet closer, spin indexer, or collet block that accepts the 1.242 inches-20 external thread standard.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Before installing or removing the collet, power down the machine and ensure the spindle has come to a complete stop. Thread the collet into the closer or chuck by hand first to confirm clean thread engagement before applying a collet wrench. Inspect the collet bore and workpiece surfaces for chips or burrs prior to clamping, as contamination directly affects runout and workholding accuracy.