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 2925-00-603-3986
NSN 5910-00-287-3258
NSN 5910-01-628-6647
NSN 7035-01-003-7769
NSN 5945-01-500-1371
NSN 6320-01-246-4390
NSN 5935-01-391-9501
NSN 6110-00-009-5414
NSN 5965-00-761-4666
NSN 5935-00-483-7308
NSN 6620-00-324-0930
NSN 5985-00-236-8634