Nha is mounting group; material type is grade 8
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 5925-01-085-1981
NSN 6110-01-466-6395
NSN 7035-00-574-4223
NSN 5905-01-013-9558
NSN 5999-01-072-4962
NSN 6240-01-032-5034
NSN 5910-00-135-8589
NSN 4140-01-585-9196
NSN 6105-01-424-0275
NSN 5855-01-461-2741
NSN 5985-01-140-1559
NSN 6240-01-212-9535