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 5895-01-146-5382
NSN 6110-01-463-9260
NSN 6645-01-515-9951
NSN 5985-00-369-7180
NSN 6150-01-335-0679
NSN 5915-01-085-5491
NSN 2925-00-516-8841
NSN 5915-01-027-0163
NSN 6150-01-101-4136
NSN 6320-01-320-3305
NSN 5960-01-357-1261
NSN 5920-00-716-9838