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 7035-00-337-8745
NSN 6220-01-189-4922
NSN 5996-01-377-3743
NSN 6620-01-068-4498
NSN 5925-01-359-5532
NSN 6105-01-139-4778
NSN 5990-01-195-0593
NSN 6220-01-578-5868
NSN 5999-01-123-2725
NSN 5950-01-545-8939
NSN 5996-01-171-2132
NSN 5930-01-025-1549