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 6685-00-149-3624
NSN 5925-01-249-4753
NSN 6105-00-893-3139
NSN 6135-01-620-3874
NSN 6685-01-614-1380
NSN 5835-00-257-2852
NSN 5999-00-458-1364
NSN 6130-01-265-4028
NSN 6645-00-069-4381
NSN 5990-01-414-2778
NSN 5996-01-561-2413
NSN 5905-00-434-6129