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 6135-01-626-9374
NSN 5999-00-756-8508
NSN 6320-00-646-3311
NSN 6685-01-472-6737
NSN 5915-01-494-0450
NSN 5895-01-143-0822
NSN 6610-01-476-7412
NSN 5990-01-594-7470
NSN 5920-01-010-4855
NSN 6240-01-556-2924
NSN 5925-00-791-4058
NSN 5975-00-104-5399