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 6135-01-255-9129
NSN 5920-01-444-4082
NSN 5960-01-172-2088
NSN 6145-00-596-8447
NSN 5975-01-525-1419
NSN 5835-01-626-9603
NSN 6110-01-289-1284
NSN 5925-01-013-9650
NSN 5950-01-209-3752
NSN 5945-00-862-0204
NSN 6110-00-066-6064
NSN 6150-01-225-2535