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 5945-00-565-9304
NSN 5985-00-553-9735
NSN 6150-01-078-3325
NSN 5920-00-792-5581
NSN 5975-00-407-4206
NSN 7035-01-411-6062
NSN 6320-01-145-9013
NSN 5950-00-434-4355
NSN 5920-01-286-4297
NSN 6645-00-348-2841
NSN 6240-00-193-8573
NSN 5990-01-127-1108