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 5990-01-250-4198
NSN 6130-00-495-6279
NSN 6145-00-487-9575
NSN 5960-01-024-6615
NSN 6320-00-360-1744
NSN 6610-01-461-8180
NSN 5998-01-215-1927
NSN 5915-01-254-4458
NSN 6645-01-620-0044
NSN 6105-01-143-5774
NSN 6130-01-531-6194
NSN 5998-01-022-5324