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 5990-01-502-8209
NSN 5910-01-473-8068
NSN 5950-01-459-7961
NSN 2925-00-441-8252
NSN 5996-00-281-4500
NSN 5915-00-363-9571
NSN 6135-01-022-5427
NSN 6240-00-787-8329
NSN 5975-00-783-7249
NSN 5975-01-242-4294
NSN 6685-01-488-5138
NSN 6135-01-633-8502