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 5915-01-038-4372
NSN 6610-00-814-8598
NSN 4140-00-823-4438
NSN 6620-01-286-6769
NSN 5965-01-150-1920
NSN 6150-01-269-6073
NSN 5996-00-224-9185
NSN 2925-01-218-5556
NSN 5855-00-631-4565
NSN 6145-01-159-1180
NSN 5855-01-180-2172
NSN 5950-01-535-6326