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 5935-00-843-5136
NSN 6685-00-112-1240
NSN 6620-01-131-3201
NSN 5905-01-025-6949
NSN 6610-00-659-8760
NSN 5925-01-157-2209
NSN 5998-01-195-9094
NSN 5985-01-412-1085
NSN 5960-01-344-2604
NSN 6240-01-442-5114
NSN 5855-01-376-0363
NSN 5945-01-082-8735