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 5975-01-332-9895
NSN 5895-01-651-5469
NSN 6685-00-240-4177
NSN 4140-01-386-5630
NSN 5835-01-512-4834
NSN 6620-01-527-4423
NSN 5905-01-188-5747
NSN 5930-00-235-3177
NSN 5996-00-272-2560
NSN 5835-00-761-5615
NSN 6145-01-160-6885
NSN 5925-01-555-8524