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 5835-00-445-5539
NSN 5999-01-086-0106
NSN 5925-01-095-6397
NSN 5920-01-604-5139
NSN 7035-01-522-9129
NSN 5910-00-686-2375
NSN 6145-00-369-3828
NSN 5945-00-871-7814
NSN 2925-01-116-6838
NSN 4140-00-388-1270
NSN 5999-01-267-5508
NSN 2925-00-275-1807