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 6130-01-363-2761
NSN 6145-00-156-4394
NSN 6130-01-337-9866
NSN 5998-01-396-3372
NSN 5998-01-043-4657
NSN 5910-01-152-2051
NSN 5985-01-167-3188
NSN 5895-01-211-9922
NSN 5996-00-059-2407
NSN 5945-01-537-9461
NSN 6130-01-289-9903
NSN 5910-01-186-2214