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 5950-00-862-3297
NSN 5905-01-502-3400
NSN 4140-00-580-7038
NSN 5895-01-604-9279
NSN 5990-00-621-0572
NSN 6105-00-854-4575
NSN 5975-01-529-3376
NSN 5945-01-575-9089
NSN 5925-01-393-2573
NSN 6150-01-586-5442
NSN 5905-01-411-6520
NSN 5930-01-365-2272