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 5945-01-282-2798
NSN 6645-01-063-8243
NSN 6650-01-094-6876
NSN 5999-01-617-5484
NSN 5895-00-644-5712
NSN 6150-01-554-7440
NSN 6110-00-025-9920
NSN 5975-01-556-3662
NSN 2925-00-936-9344
NSN 5905-01-584-0635
NSN 5965-01-210-7784
NSN 5965-01-506-3320