uxcell 1/2-13 UNC Round Die, Machine Thread Right Hand Threading Die, Alloy Tool Steel
- ... to facilitate the chip discharge from the chip hole. Suitable lubricating oil should be added to the cutting edge of the die when tapping the thread. The bar diameter should be smaller ( about 0.05mm-0.15mm) than the nominal diameter of the required thread. Excessive diameter can easily cause difficult cutting and lead to damage to the die teeth..