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 6135-00-735-8530
NSN 6130-01-479-7127
NSN 6130-01-454-0498
NSN 5835-00-733-9145
NSN 7035-00-631-3782
NSN 5930-01-081-6431
NSN 5835-00-529-6307
NSN 6645-01-172-4477
NSN 5930-01-281-0045
NSN 6685-00-332-2655
NSN 5910-00-165-9333
NSN 4140-01-634-0330