Greenlee 61086 'DD' Punch Assembly (.769 Diameter x .642 Flats)

The Greenlee 61086 is a top - notch punch assembly. It features a double 'D' shaped punch. The hole size is 0.769 inches in diameter and 0.642 inches (19.5mm x 16.3mm), with a minimum pilot hole of 0.500 inches. It can handle 14 - gauge mild steel, offering maximum capacity for mild steel. The operation can be either by hand or hydraulic. The set includes a punch, a die, a draw stud 34421, a drive nut 34733, and a counter nut 04638. There's also an optional adapter (33967, sold separately) for a hydraulic driver.

Using the Greenlee 61086 is easy. First, make sure you have a pilot hole with a minimum size of 0.500 inches. Then, assemble the punch, die, draw stud, drive nut, and counter nut as included in the set. You can operate it by hand or use a hydraulic driver with the optional adapter (sold separately). When using, keep an eye on the material. This product is designed for 14 - gauge mild steel, so don't try to punch other materials that may be too thick or hard. After each use, clean the punch and die to remove any debris. Store it in a dry place to prevent rust and damage. If you use the hydraulic option, follow the instructions of the hydraulic driver for proper maintenance.