Step Pilots Series 186

Step pilots are designed for use with 431 and 181 reverse countersinks and 430 and 191 reverse spotfacers. These pilots feature a step (larger than the pilot hole in the reverse cutter being used) to pilot in the workpiece. Ideal for use with carbide tipped cutters or where special pilot diameters are required. Special P2 pilot diameters are readily ground from standard. For proper pilot selection refer to reverse cutter tables. 186-20 through 24 pilots have the double drive bayonet lock, a 2 inch long shank with the same diameter at the P1 drive, and an overall length of 8 inches.