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 5925-01-442-3792
NSN 5925-01-152-2690
NSN 6685-01-300-6047
NSN 5965-01-433-1974
NSN 5965-00-653-4782
NSN 5965-00-564-4399
NSN 5950-00-991-7442
NSN 5990-01-408-6142
NSN 5996-01-452-0402
NSN 6150-01-361-9028
NSN 6320-01-372-1170
NSN 6620-00-658-6588