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 5945-01-211-6585
NSN 6105-00-775-6072
NSN 6110-01-100-4445
NSN 5945-01-144-3034
NSN 5930-01-347-9588
NSN 6685-01-371-0084
NSN 5965-00-665-2156
NSN 5930-01-032-9360
NSN 6150-00-025-0612
NSN 5910-00-160-1006
NSN 6610-00-810-3245
NSN 6685-00-225-5257