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 5975-01-135-8501
NSN 5996-01-311-2808
NSN 5965-01-205-3088
NSN 5925-01-483-7604
NSN 6220-01-510-9755
NSN 6240-01-420-6495
NSN 6620-01-381-6225
NSN 5855-01-003-7102
NSN 6610-00-112-2698
NSN 5835-00-779-2836
NSN 7035-00-270-5519
NSN 5930-01-612-7205