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 5945-01-391-7485
NSN 7035-01-254-3044
NSN 5935-01-510-3204
NSN 6645-00-269-8440
NSN 6240-01-578-2334
NSN 5990-01-184-2550
NSN 5996-01-652-0700
NSN 5855-01-165-2177
NSN 6645-00-881-0697
NSN 5996-00-249-1104
NSN 5915-01-436-7276
NSN 5985-01-258-4769