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 5950-00-400-9104
NSN 6320-00-194-4252
NSN 5960-00-584-4553
NSN 2925-01-322-9780
NSN 6240-01-420-8320
NSN 5996-01-417-4246
NSN 5999-01-313-9236
NSN 6220-01-020-8018
NSN 5905-01-273-9842
NSN 5975-00-167-4898
NSN 5985-01-432-2483
NSN 6610-01-535-0310