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 5930-01-406-5613
NSN 6110-00-222-3317
NSN 5935-01-361-5386
NSN 5960-01-424-1781
NSN 5985-01-131-0635
NSN 6685-00-339-8822
NSN 5945-01-142-7449
NSN 6220-01-482-4159
NSN 5965-00-378-3403
NSN 5990-01-458-9576
NSN 5930-01-499-4140
NSN 5905-01-043-8042