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 5895-00-067-4968
NSN 6240-01-507-3609
NSN 5985-01-121-9671
NSN 5999-01-023-2790
NSN 5996-00-737-0646
NSN 5998-01-283-5190
NSN 5990-01-548-3711
NSN 5975-01-461-3542
NSN 6130-01-035-8590
NSN 4140-00-977-6297
NSN 6150-01-306-8468
NSN 4140-01-552-6158