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 6135-01-351-2690
NSN 5930-01-247-9176
NSN 6130-01-554-4596
NSN 5990-00-546-8619
NSN 5925-01-562-9616
NSN 5975-00-336-3481
NSN 6135-01-121-3225
NSN 5925-01-391-4986
NSN 6220-01-069-3685
NSN 5950-00-760-9612
NSN 5895-01-605-1653
NSN 5925-00-318-2222