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 6220-01-565-0971
NSN 6105-01-046-6260
NSN 5985-01-256-9457
NSN 5985-01-182-7437
NSN 6130-01-527-1462
NSN 6105-00-688-7082
NSN 5975-01-371-3051
NSN 7035-00-753-0695
NSN 5855-00-688-9954
NSN 2925-01-221-3247
NSN 2925-01-426-3410
NSN 6645-01-554-0609