Countersunk on one side only
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.)
Classification: Nuts of iron or steel
NSN 5996-01-231-2062
NSN 5965-01-495-1170
NSN 6620-00-246-6448
NSN 5975-00-267-2770
NSN 6135-01-041-3829
NSN 6685-01-003-7776
NSN 6105-01-334-0115
NSN 4140-01-142-8340
NSN 5999-01-121-4951
NSN 5905-01-305-5178
NSN 5996-01-222-8117
NSN 5999-01-580-2631