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 5945-01-529-6523
NSN 6320-00-036-3688
NSN 5935-00-232-3351
NSN 5910-01-089-5436
NSN 5960-01-387-0373
NSN 6145-01-463-9683
NSN 5895-01-265-5147
NSN 6650-01-628-2743
NSN 5905-00-379-2207
NSN 5998-00-932-5589
NSN 5935-01-659-9655
NSN 7035-01-079-6560