IFI 100/107, IFI 101 One piece, all-metal prevailing torque hex nuts with a conical top and a flat bottom bearing surface with chamfered corners. automation lock nuts, Autolock nuts, Crownlock nuts, Unitorque nuts. - CISO TRADE | Purchase full range and sizes of fasteners, fittings, bearings, hoses, pipes, valves, pumps, pneumatic & hydraulic components, seals easily one-stop!