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.)
Classification: Nuts of iron or steel
NSN 5990-00-159-1774
NSN 5910-01-420-5160
NSN 2925-01-583-5619
NSN 5996-01-140-1784
NSN 6240-01-608-4990
NSN 5835-01-424-2002
NSN 6145-01-146-5555
NSN 5999-00-511-8525
NSN 6130-01-192-7586
NSN 5930-01-515-5202
NSN 6145-00-438-8979
NSN 6135-01-470-4077