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 5910-00-762-2256
NSN 6150-00-276-7483
NSN 5895-00-187-2850
NSN 5996-01-454-1821
NSN 6145-01-592-2722
NSN 6145-01-128-3085
NSN 5950-01-098-2535
NSN 6240-01-498-9370
NSN 5999-00-940-8374
NSN 5925-01-156-0361
NSN 5855-00-586-6255
NSN 5945-01-580-8921