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 7035-01-546-2769
NSN 5895-00-578-8424
NSN 5965-00-932-4591
NSN 5925-01-158-0762
NSN 6320-01-504-3948
NSN 6145-00-564-5591
NSN 5996-01-014-6103
NSN 6105-01-252-6641
NSN 5999-01-305-9680
NSN 6130-00-397-7690
NSN 5915-00-270-1076
NSN 5895-00-215-3775