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 5999-00-964-5239
NSN 5990-01-100-1840
NSN 5975-00-780-5123
NSN 2925-00-215-4954
NSN 7035-01-473-3223
NSN 5996-00-231-9322
NSN 5925-01-165-9913
NSN 5996-01-582-7251
NSN 5920-00-185-9587
NSN 5990-01-548-5979
NSN 2925-01-167-6500
NSN 5985-01-655-8644