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 5950-00-940-8912
NSN 5985-01-535-0969
NSN 6320-01-492-1976
NSN 5985-00-832-6733
NSN 5915-00-801-6317
NSN 5998-01-217-8804
NSN 5925-01-362-3425
NSN 5999-01-232-1407
NSN 5990-01-453-3552
NSN 5960-00-584-4553
NSN 6130-00-419-1120
NSN 5835-00-857-4486