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 5915-01-188-8314
NSN 6135-00-763-5793
NSN 5950-01-516-4853
NSN 5905-01-618-8053
NSN 6240-01-381-5541
NSN 5895-01-350-0348
NSN 5965-01-241-0553
NSN 6220-01-533-6553
NSN 5975-00-316-2539
NSN 5835-01-184-6878
NSN 6620-01-398-8986
NSN 6610-01-485-3074