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 5910-01-102-3980
NSN 5975-00-460-5045
NSN 7035-01-457-5645
NSN 5910-01-157-9946
NSN 5996-01-425-1182
NSN 5975-01-183-1812
NSN 5905-00-995-3105
NSN 5855-00-791-5000
NSN 6610-00-932-2465
NSN 6145-01-540-3558
NSN 6130-01-531-2706
NSN 5930-01-128-3874