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 5910-00-997-9510
NSN 6135-01-226-1396
NSN 5945-01-144-2264
NSN 5998-01-435-7280
NSN 5905-01-634-0595
NSN 6240-00-079-0112
NSN 5835-00-198-4936
NSN 4140-00-113-8215
NSN 4140-01-378-6710
NSN 7035-01-539-3781
NSN 6320-01-494-7491
NSN 5975-00-819-7325