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 6620-00-022-8056
NSN 6685-00-148-9729
NSN 6130-01-237-1883
NSN 5990-01-272-4091
NSN 5960-01-391-8860
NSN 5835-01-536-6241
NSN 6645-00-100-4931
NSN 5905-00-052-5997
NSN 5930-01-534-3928
NSN 5975-01-568-3147
NSN 6145-01-103-4863
NSN 5998-00-943-4977