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 5895-01-596-2659
NSN 6620-01-119-2346
NSN 6685-01-479-6784
NSN 6130-00-512-8692
NSN 5905-01-556-9079
NSN 5965-01-012-1065
NSN 5915-01-145-0919
NSN 6135-01-443-7716
NSN 6620-00-189-0967
NSN 5985-01-634-0635
NSN 7035-01-585-4418
NSN 5910-01-381-1284