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 6105-01-245-3314
NSN 5910-00-011-4565
NSN 6240-01-370-5818
NSN 6610-00-935-7131
NSN 6650-01-464-5033
NSN 6150-01-448-3206
NSN 6145-00-784-3741
NSN 7035-00-922-5700
NSN 5855-01-521-8616
NSN 5925-01-455-0630
NSN 5925-00-396-2412
NSN 6685-01-563-0800