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 2925-00-999-8967
NSN 5985-01-531-1792
NSN 2925-01-400-2286
NSN 6685-01-412-0767
NSN 6145-01-507-0724
NSN 5925-01-577-6903
NSN 5999-01-462-7849
NSN 7035-00-111-4389
NSN 5985-00-679-9529
NSN 5930-00-959-5191
NSN 6650-00-684-3060
NSN 5935-00-502-9966