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 5915-01-210-9871
NSN 5965-00-823-8623
NSN 6685-00-044-6743
NSN 2925-01-182-0227
NSN 6220-00-401-0704
NSN 5945-01-103-7954
NSN 5905-01-240-1461
NSN 5996-00-839-1339
NSN 5925-01-483-0832
NSN 6620-01-278-8028
NSN 6610-01-555-8364
NSN 5930-01-014-2639