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 5835-01-112-4725
NSN 6220-00-133-7904
NSN 6620-00-179-9079
NSN 6150-00-548-9802
NSN 5999-01-558-9895
NSN 2925-00-278-9468
NSN 5935-01-005-1381
NSN 5996-00-848-7220
NSN 5835-01-090-2844
NSN 5990-00-166-9476
NSN 5905-00-546-9060
NSN 6685-01-573-6164