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 7035-00-337-8745
NSN 6110-01-221-1385
NSN 5975-01-152-2635
NSN 5925-01-163-0160
NSN 2925-00-660-8131
NSN 5920-01-094-7284
NSN 6220-01-114-2959
NSN 5925-01-282-0606
NSN 6650-01-127-4647
NSN 5985-01-191-0898
NSN 6685-00-082-3153
NSN 6240-01-039-4241