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 6130-01-149-5503
NSN 5910-01-633-9963
NSN 6145-01-160-0811
NSN 6130-00-962-5383
NSN 5999-00-801-9331
NSN 5835-01-031-7265
NSN 6220-01-485-2381
NSN 5930-01-353-7398
NSN 5835-00-253-3453
NSN 6240-01-598-8177
NSN 6110-01-304-6920
NSN 5960-01-065-6730