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 6135-00-812-9039
NSN 2925-01-593-2542
NSN 5930-00-100-0163
NSN 6685-01-020-8756
NSN 6220-00-998-0552
NSN 5895-01-534-7568
NSN 5999-01-446-7852
NSN 5960-01-211-2089
NSN 6620-01-088-1272
NSN 5996-01-215-6379
NSN 5990-00-617-1422
NSN 4140-01-433-1192