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 5965-01-316-9859
NSN 6150-00-273-7758
NSN 6150-01-050-9128
NSN 5920-00-324-2315
NSN 5930-01-634-0659
NSN 6320-00-994-0179
NSN 5925-01-598-3230
NSN 4140-01-550-8030
NSN 6685-00-121-8650
NSN 6610-01-406-6696
NSN 6685-01-502-5930
NSN 5920-01-574-1689