Indent 3 places equally spaced one side only
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.)
Classification: Nuts of iron or steel
NSN 5855-00-688-9954
NSN 5945-01-338-0991
NSN 5985-00-245-3509
NSN 5965-01-250-3214
NSN 6650-01-451-1372
NSN 6145-00-905-6797
NSN 5930-01-209-1971
NSN 6135-01-450-3781
NSN 6620-01-457-9100
NSN 7035-01-038-9970
NSN 5975-00-301-0086
NSN 6145-01-332-9171