Value Collection 230-4151 5C Round Steel Collet 51/64 in

Product Description

The VALUE COLLECTION 230-4151 is a 5C round steel collet sized at 51/64 inches, designed for use with 5C collet chucks on lathes, rotary indexers, and collet closers in machining applications. The collet holds round workpieces with a total indicated runout (TIR) of 0.0005 inches, providing consistent concentricity for precision turning, milling, and grinding operations. It features a 1.041-24 internal thread and a 1.242-20 external thread for standard 5C-compatible spindle engagement. Manufactured from steel, this collet offers durability under repeated clamping cycles in production and job shop environments. Installation and removal are handled by machinists and toolroom technicians.

This collet is suited for use in manual and CNC lathes, spin fixtures, and indexing heads that accept the 5C collet format. It is appropriate for round bar stock, round turned parts, and cylindrical workpieces requiring repeatable, concentric workholding. The 51/64-inch capacity makes it a practical choice for shops working with near-inch-nominal stock that does not correspond to a standard fractional size. It is used in both production and prototype machining environments where accurate, low-runout workholding is required.

Key Features

• 51/64 inch round collet capacity for near-inch-nominal round workpieces
• 0.0005 inch TIR for high concentricity and repeatable part location
• 1.041-24 internal thread matches standard 5C spindle nose engagement
• 1.242-20 external thread for standard 5C closer and chuck compatibility
• Steel construction provides durability under repeated clamping and production use

Compatibility

Designed as a standard 5C-format round collet for use in any machine tool spindle, collet chuck, collet closer, or rotary indexer that accepts the 5C collet standard.

Installation Notes

5C collets are installed and removed by qualified machinists following the machine tool manufacturer's procedures. Power down and de-energize the machine before changing collets. Inspect the collet bore and spindle nose for chips or burrs before seating the collet, as contamination directly affects runout and workholding accuracy. Do not exceed the collet's rated capacity, as oversize workpieces can split the collet or damage the spindle.