A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 5975-01-130-4268
NSN 6620-00-431-3837
NSN 6135-01-329-7994
NSN 6220-00-932-4992
NSN 6145-01-177-9839
NSN 6240-00-526-0243
NSN 6320-01-211-6578
NSN 6150-01-598-5774
NSN 6320-01-162-5977
NSN 5920-01-195-2299
NSN 6150-01-024-9852
NSN 6150-01-543-0004