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 5996-00-296-2510
NSN 5915-01-007-5716
NSN 5895-00-800-3224
NSN 6150-00-925-5745
NSN 5965-01-514-0932
NSN 5985-01-416-1223
NSN 6650-00-299-9681
NSN 5935-00-233-4962
NSN 4140-01-213-2910
NSN 5925-00-139-1708
NSN 6105-01-431-8998
NSN 5910-00-301-1227