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 5910-01-502-6614
NSN 5965-01-660-9941
NSN 6220-01-167-5436
NSN 5960-00-337-7628
NSN 6135-01-020-3805
NSN 6145-00-828-2504
NSN 6130-00-985-8313
NSN 5985-01-615-7777
NSN 6220-01-634-0660
NSN 6110-01-073-0088
NSN 6620-01-462-0001
NSN 5855-01-258-6180