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 5920-01-191-6321
NSN 5920-01-076-4705
NSN 5910-01-367-2738
NSN 6135-01-317-6021
NSN 5910-01-446-6477
NSN 6240-00-505-6099
NSN 5950-01-399-0248
NSN 6685-01-192-9871
NSN 5960-00-776-5509
NSN 5855-01-609-1869
NSN 5910-01-430-0017
NSN 6620-01-300-6992