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 5975-00-660-6652
NSN 5855-01-433-2220
NSN 5935-00-589-0829
NSN 6145-00-221-6528
NSN 6135-00-990-1822
NSN 6685-01-613-1280
NSN 5905-01-196-5663
NSN 6620-01-624-3933
NSN 6105-00-880-3339
NSN 5905-01-383-3816
NSN 5950-00-371-3756
NSN 7035-00-541-8516