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 5930-00-867-7117
NSN 5910-01-210-0082
NSN 5925-01-242-6444
NSN 5925-00-104-2699
NSN 5920-01-545-8581
NSN 5910-01-273-7410
NSN 6135-01-074-8220
NSN 6145-00-918-3187
NSN 5975-01-051-1976
NSN 5855-01-508-6916
NSN 6150-00-871-8571
NSN 5925-01-605-0956