5/16 to 21/64 Inch Collet Capacity, Series 38 AF Collet MPN:RDF - 040

The 5/16 - 21/64 Capacity collet fits into various collet chucks designed to hold components securely while machining or drilling operations. This product falls in the Series 38 American Industries, model AF collets which offers a great option for high precision applications in tool room environments or when working with delicate materials such as aluminum, brass or bronze components. Collet chucks offer better clamping force while reducing damage to the material being held as opposed to using standard hexagonal nut wrenches making it ideal for precision machinists and technicians looking to improve their workmanship and accuracy.