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 6130-00-160-4721
NSN 5930-00-186-9934
NSN 5895-00-576-4865
NSN 5895-01-049-5226
NSN 5920-00-382-8849
NSN 5920-01-440-5332
NSN 5975-01-027-0253
NSN 5895-01-511-0062
NSN 5920-01-443-9451
NSN 5920-00-617-9909
NSN 5960-00-275-2990
NSN 5895-01-124-0095