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 6320-00-483-0451
NSN 6650-01-251-2653
NSN 5910-01-643-3257
NSN 2925-00-757-7028
NSN 5920-01-069-9833
NSN 5996-00-201-3763
NSN 7035-00-931-9415
NSN 5925-00-764-1105
NSN 6650-01-004-6702
NSN 5945-01-461-7579
NSN 5960-01-031-1759
NSN 5915-00-239-7174