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 5950-00-521-9412
NSN 5985-01-485-0456
NSN 6150-01-199-1436
NSN 5996-00-826-3198
NSN 6150-01-630-2284
NSN 5910-01-604-9141
NSN 7035-01-350-4247
NSN 5990-00-636-4218
NSN 5855-01-061-6890
NSN 5835-00-351-9459
NSN 5998-01-361-6282
NSN 7035-01-247-6256