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 6130-01-550-7073
NSN 5905-00-465-0186
NSN 6110-01-415-5086
NSN 5895-01-390-9380
NSN 6220-00-379-4044
NSN 6320-01-607-1491
NSN 6685-01-027-1168
NSN 5855-00-586-6255
NSN 5915-00-269-3749
NSN 6135-01-222-0703
NSN 6135-00-500-2082
NSN 5945-00-532-2339