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 6150-01-571-8616
NSN 5905-01-224-7977
NSN 5925-01-552-7439
NSN 6685-01-470-9609
NSN 5965-00-362-2158
NSN 6135-01-452-8999
NSN 6620-01-448-0572
NSN 6685-01-025-3418
NSN 6105-00-189-7130
NSN 5985-01-075-4406
NSN 5945-01-387-0820
NSN 6650-01-014-7671