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 5930-00-052-3897
NSN 5975-01-100-3222
NSN 6240-00-228-1931
NSN 6320-01-630-7629
NSN 6110-01-128-0681
NSN 5895-00-577-4078
NSN 6240-01-619-4180
NSN 5975-00-946-1390
NSN 5965-00-445-1843
NSN 5925-00-529-0441
NSN 5965-01-620-5320
NSN 6650-00-021-9555