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 5996-01-355-9583
NSN 5985-01-259-3813
NSN 5999-01-602-7336
NSN 5945-01-038-6879
NSN 5965-01-107-4078
NSN 5990-01-386-5561
NSN 6130-01-081-8157
NSN 6110-00-300-1876
NSN 2925-01-217-0465
NSN 6620-01-369-3589
NSN 5920-01-275-4889
NSN 5999-01-388-2942