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 5950-01-502-2899
NSN 5985-00-010-0645
NSN 6220-01-462-0236
NSN 4140-00-935-5360
NSN 5915-00-584-3512
NSN 6130-01-290-3310
NSN 6145-01-542-8712
NSN 5930-01-181-9329
NSN 6650-00-547-4557
NSN 6110-01-414-5305
NSN 5945-01-281-7404
NSN 6650-01-536-4086