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 5895-00-952-3490
NSN 6645-01-124-3935
NSN 6150-00-197-4934
NSN 5990-00-499-7535
NSN 5945-01-446-9895
NSN 5990-01-512-9129
NSN 6105-01-331-9022
NSN 6110-01-462-0770
NSN 2925-01-426-3410
NSN 6240-00-489-3257
NSN 2925-01-197-7864
NSN 7035-00-897-7567