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 6650-01-023-7002
NSN 4140-00-521-0380
NSN 2925-01-446-6976
NSN 6645-00-033-8714
NSN 5999-01-038-6693
NSN 5996-01-436-8548
NSN 6145-00-471-3975
NSN 7035-01-432-2424
NSN 5996-00-132-4203
NSN 6620-01-265-2887
NSN 5930-01-079-5539
NSN 5965-00-997-5764