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 5990-01-199-2846
NSN 5855-01-076-8023
NSN 5996-01-202-9338
NSN 6220-00-527-1177
NSN 6650-01-315-4043
NSN 5905-00-406-6651
NSN 5990-00-258-0228
NSN 5910-00-140-9537
NSN 6150-00-596-8766
NSN 6135-01-419-2233
NSN 5945-00-739-2202
NSN 5990-00-976-2210