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 5945-01-098-5170
NSN 5998-00-186-6012
NSN 6645-00-624-5963
NSN 5985-01-100-4147
NSN 7035-01-285-7413
NSN 6610-00-248-1559
NSN 6610-01-435-5425
NSN 6130-00-844-2792
NSN 6130-01-377-9038
NSN 5945-00-408-0727
NSN 6110-01-652-9108
NSN 4140-01-008-7159