Value Collection 230-4375 5C Step Collet Steel

Product Description

The VALUE COLLECTION 230-4375 is a 5C step collet machined from steel, designed for use in lathes and collet-closer systems that accept the 5C collet standard. Step collets grip finished or stepped workpieces that standard collets cannot hold securely, making them a preferred choice for secondary operations on turned parts. This collet features a 5-inch head diameter and a pilot hole size of 0.3125 inches, with an internal thread size of 1.041 inches at 24 threads per inch and an external thread size of 1.242 inches at 20 threads per inch. It is suited for machinists and toolroom operators who need reliable, repeatable workholding on cylindrical or stepped stock.

This step collet is used in manual and CNC lathe applications where secondary operations require holding a pre-turned workpiece by a finished diameter or shoulder. Typical installations include production turning, toolroom work, and short-run machining setups. The steel construction provides durability under repeated clamping cycles and resist deformation under normal lathe operating loads. This collet is appropriate for shops running 5C-compatible spindles in both manual and automated environments.

Key Features

• Step collet design grips pre-turned or shouldered workpieces that standard collets cannot hold
• Steel construction for durability and resistance to deformation under clamping load
• 5-inch head diameter sized for 5C collet-closer systems
• Pilot hole size of 0.3125 inches for precise workpiece location
• Internal thread: 1.041 inches at 24 TPI; external thread: 1.242 inches at 20 TPI
• Head thickness of 1.125 inches for stable, consistent seating in the collet closer

Compatibility

Designed as an OEM-style replacement or addition for machine tool setups using the 5C collet standard on lathes and collet-closer fixtures.

Installation Notes

5C step collets are installed and removed by qualified machinists or toolroom personnel. Power down and lock out the lathe spindle before inserting or removing the collet. Ensure the collet closer drawbar threads are clean and undamaged before seating the collet. Do not exceed the workpiece diameter limits of the pilot hole, and inspect the collet for wear or cracking before each use.