Material property class 12
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 5965-01-607-1966
NSN 4140-01-424-0841
NSN 6610-01-152-9240
NSN 5910-00-526-8005
NSN 5925-01-217-6009
NSN 6220-01-444-1889
NSN 6320-01-270-1419
NSN 6110-00-519-5339
NSN 6685-01-097-2171
NSN 2925-01-043-9786
NSN 6320-01-358-0141
NSN 5960-01-201-5804