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 7035-00-043-1325
NSN 6645-01-217-2888
NSN 6150-00-878-1248
NSN 5895-01-352-5695
NSN 6145-00-033-2997
NSN 5855-00-466-2309
NSN 6145-01-610-1963
NSN 5930-01-074-3390
NSN 5855-01-249-0717
NSN 7035-01-066-4127
NSN 5999-00-983-5461
NSN 5996-01-233-1614