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 5990-00-478-6518
NSN 6645-01-644-2563
NSN 5925-00-647-3469
NSN 2925-00-737-6476
NSN 5935-01-299-2802
NSN 6685-01-622-9247
NSN 5998-00-112-1036
NSN 4140-01-155-3101
NSN 7035-01-631-4095
NSN 6220-01-395-4136
NSN 5935-00-235-9006
NSN 5920-01-426-8517