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 2925-01-099-7075
NSN 4140-00-076-4088
NSN 2925-01-327-3069
NSN 6150-01-145-5156
NSN 2925-01-209-9245
NSN 5915-01-426-8862
NSN 5905-01-587-2201
NSN 5985-01-085-6288
NSN 5950-00-482-6766
NSN 5855-00-494-9581
NSN 5895-01-064-8528
NSN 5910-00-813-2711