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 5925-01-105-1879
NSN 6620-00-557-7008
NSN 5985-01-020-7894
NSN 2925-01-187-5480
NSN 5905-01-012-1823
NSN 6240-01-494-9861
NSN 5990-01-529-6347
NSN 2925-01-648-6859
NSN 6240-01-557-1177
NSN 6645-00-542-1206
NSN 6620-01-287-9975
NSN 5998-00-054-3187