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 5935-01-586-9106
NSN 2925-01-604-8984
NSN 6620-01-575-1631
NSN 5985-00-293-5684
NSN 6105-00-990-8707
NSN 6220-00-706-2772
NSN 5895-00-548-9329
NSN 5996-00-819-4579
NSN 6685-01-530-3718
NSN 5985-01-421-4082
NSN 7035-00-299-7150
NSN 6650-01-414-6701