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 5985-00-254-3136
NSN 5835-00-286-5432
NSN 6150-00-819-0025
NSN 5985-01-648-2503
NSN 6135-01-657-7116
NSN 5990-00-105-7831
NSN 5990-01-485-0260
NSN 6135-01-633-8502
NSN 7035-01-587-1194
NSN 2925-01-139-7098
NSN 5905-01-349-3034
NSN 6130-01-576-9618