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 5910-00-850-8510
NSN 5855-01-605-9627
NSN 5960-00-113-4314
NSN 6610-01-152-2821
NSN 5996-01-024-9976
NSN 5998-01-249-6097
NSN 6110-01-391-6497
NSN 5910-01-027-4297
NSN 6135-00-276-7625
NSN 5905-01-302-8872
NSN 6620-01-020-4526
NSN 7035-00-116-1900