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 5965-01-268-7322
NSN 6135-01-054-2462
NSN 6150-01-416-0680
NSN 5975-01-397-6380
NSN 5965-00-461-2594
NSN 5930-00-170-5567
NSN 6610-01-199-0499
NSN 5895-00-932-0541
NSN 5910-00-284-4925
NSN 5930-01-453-6735
NSN 6150-01-625-4527
NSN 6620-01-486-2555