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 5960-00-692-2887
NSN 6620-01-207-8043
NSN 6685-01-416-6053
NSN 5905-01-529-6604
NSN 6240-01-509-5097
NSN 6685-01-045-5766
NSN 5855-01-418-0089
NSN 6685-00-180-8999
NSN 6145-01-225-5371
NSN 5915-00-435-7087
NSN 5998-01-047-9277
NSN 5895-00-826-2988