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 5935-01-283-8002
NSN 5960-00-492-2502
NSN 5950-00-973-6983
NSN 6150-00-052-0805
NSN 5996-00-481-0765
NSN 5975-01-616-6443
NSN 5925-01-091-2756
NSN 5950-01-308-0682
NSN 5855-01-318-7663
NSN 6130-00-275-5929
NSN 6620-01-032-3937
NSN 6685-00-322-7336