Value Collection 530-4216 5C Square Collet 1/4 Inch

Product Description

The VALUE COLLECTION 530-4216 is a 5C-style square steel collet designed for workholding applications on lathes, collet fixtures, and indexing equipment that accept the 5C collet standard. Sized to grip 1/4-inch square stock, it features an internal thread size of 1.041 inches-24 and an external thread size of 1.242 inches-20. The total indicator runout (TIR) is rated at 0.0005 inches, providing the repeatable concentricity that precision turning and milling setups require. Machinists and toolroom technicians install this collet when square bar stock or square-shank tooling must be held securely and accurately in a 5C-compatible spindle or fixture.

This collet is suited for job shop, production, and toolroom environments where 5C collet-compatible equipment is in use. Typical applications include holding square workpieces for turning, second-operation machining, and bench-top fixture work. The square collet profile prevents rotation of the workpiece during machining, making it appropriate for operations where a standard round collet would not adequately grip square stock. It is a single-piece item sold individually.

Key Features

• 5C collet standard for broad compatibility with 5C-capable lathes and fixtures
• Square bore sized for 1/4-inch square stock or shanks
• 0.0005-inch TIR for repeatable, precise workholding
• Internal thread: 1.041 inches-24
• External thread: 1.242 inches-20
• Steel construction for durability in production environments

Compatibility

Designed as an OEM-style replacement or standard addition for any lathe, collet closer, or fixture that accepts the 5C collet format and requires a square-bore collet for 1/4-inch square stock.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians familiar with 5C collet systems. Ensure the spindle or collet closer is fully de-energized and stationary before inserting or removing the collet. Inspect the collet bore and mating spindle taper for chips or burrs prior to seating to avoid damage to the TIR accuracy. Follow the equipment manufacturer's torque and draw-bar procedures for proper collet engagement.