Expanding Collet Set Machinable Lathe Mandrel

Precision in the workshop means never having to compromise on challenging internal workholding tasks. This premium 4 piece 5C expanding collet set is engineered for machinists, fabricators, and gunsmiths who demand absolute concentricity when gripping parts from the inside out. Covering a wide range from 1/4 to 1-15/16 inches approx, this versatile machinable mandrel lathe kit allows you to custom-turn the soft heads to seamlessly match your exact project specifications. Whether you are working with delicate thin-walled pieces or complex, irregular geometries, this standard 5C spindle toolset delivers the reliable stability needed to step up your metalworking game.

Key Features

• Machinable Soft Heads: Can be custom-turned, bored, or stepped to securely hold precise pitch diameters, hex shapes, square broached holes, or rectangular profiles.

• Dead-Length Precision: The innovative taper design seats perfectly without drawing back into the spindle, ensuring your shoulder widths and axial dimensions stay perfectly consistent.

• Premium Construction: Crafted from one-piece heat-treated tool steel and precision-ground all over to provide maximum durability, balance, and a generous expansion range up to .006 inches approx.
  
  

Why Choose Our 4pc 5C Expanding Collet Set 1/4 to 1-15/16 Machinable Lathe Mandrel Unlike standard external collets or harsh jaw chucks that crush, scratch, or deform thin-walled parts, this internal expansion design distributes gripping force evenly from the inside. Many budget alternatives suffer from axial movement during tightening, but our seated taper technology locks firmly into position to maintain dead-accurate repeatable lengths. It eliminates the need for expensive custom fixtures, saving you valuable time and shop overhead.

Perfect For

• Machining thin-walled tubes, rings, and delicate components without distorting the outer diameter.

• Repeatable secondary operations on CNC machinery, manual lathes, and index fixtures utilizing a 5C spindle.

• Creating custom step-grips for uniquely shaped workpieces, gears, and custom automotive or aerospace parts.
  
  

Bring Next-Level Precision to Your Lathe Operations Today Experience the difference a true precision-fit workholding system can make in your daily machining routine. Elevate your craftsmanship and protect your delicate materials by adding this essential kit to your shop toolbox today.