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 5945-01-240-3012
NSN 5945-01-300-2256
NSN 6685-00-535-2673
NSN 5910-01-032-1005
NSN 6105-00-292-4110
NSN 5915-01-331-8695
NSN 5975-01-153-1927
NSN 6145-01-173-3782
NSN 5895-01-391-7724
NSN 5996-00-659-9187
NSN 5935-01-079-8168
NSN 5960-00-498-8580