Fully Threaded Stud: #10-32 Thread, 3-1/2" OAL MPN:407-1628

This 1-7/8 diameter with a 1-1/2 shank counterbore drill has a diamond coating, providing exceptional performance on hard metals, such as cast iron, steel, stainless steel and aluminum. It's designed for creating accurate countersinks or counterbores up to 1-3/4 deep using the straight shank model. The interchangeable pilot system eliminates the need to constantly change drill bits making it perfect for aerospace, automotive and general machining applications. Its versatility makes it an essential tool in counterbores and porting tools sectors. The 5 flutes improve efficiency by clearing debris quickly, while also providing increased accuracy with every use.