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 5990-00-675-8398
NSN 5950-01-224-4073
NSN 6650-01-505-1127
NSN 6240-00-123-7648
NSN 5915-00-396-8087
NSN 5945-01-343-6899
NSN 5905-01-103-7884
NSN 6110-00-686-4685
NSN 2925-01-510-9378
NSN 5915-00-394-1336
NSN 6220-00-900-4439
NSN 5905-01-380-6757