Value Collection 1230-4204 5C Round Collet 3.50 Mm

Product Description

The VALUE COLLECTION 1230-4204 is a 5C round collet machined from steel, designed for use in 5C-compatible lathes, collet chucks, and workholding fixtures. The collet accepts a 3.50 mm round workpiece and features a 1.041 inch-24 internal thread and a 1.242 inch-20 external thread for secure engagement with standard 5C collet closers. Total Indicated Runout (TIR) is rated at 0.015 mm, providing the concentricity needed for precision turning and grinding operations. Machinists and toolroom technicians rely on 5C round collets for repeatable part holding during high-volume production and precision one-off setups alike.

This collet is suited for use in manual and CNC lathes, rotary indexers, collet blocks, and spin fixtures that accept the 5C collet standard. It is appropriate for light-to-medium duty turning, milling, and grinding applications where consistent grip on small-diameter round stock is required. The steel construction provides durability under repeated clamping cycles in both job shop and production environments.

Key Features

• 5C round collet format — compatible with the widely adopted 5C toolholding standard
• 3.50 mm collet size for precise grip on small-diameter round stock
• Steel construction for durability under repeated clamping cycles
• 0.015 mm TIR for high concentricity and part accuracy
• 1.041 inch-24 internal thread and 1.242 inch-20 external thread for standard 5C closer engagement

Compatibility

Designed as a standard 5C-format round collet for use with any lathe, collet chuck, rotary indexer, or workholding fixture manufactured to the 5C collet specification.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Before inserting or removing the collet, ensure the machine spindle is fully stopped and all energy sources are isolated per your shop lockout/tagout procedure. Threads should be inspected for damage and kept clean and lightly lubricated to ensure proper seating and accurate TIR. Do not exceed the collet capacity; oversize workpieces will damage the collet bore and degrade runout performance.