186 SERIES step pilots are designed for use with 180 and 181 Series reverse countersinks and 190 and 191 Series reverse spotfacers. These pilots feature a step (larger than the pilot hole in the reverse cutter being used) to pilot in the work piece. Ideal for use with the 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 thru 186-24 have the “double drive” bayonet lock, a 2-inch shank with the same diameter at the “P1” drive, and an overall length of 8-inch.

* Furnished with “double drive” bayonet lock.

Pilots with special major diameters smaller than standard are readily ground from standard, prices subject to quotation.