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 6105-01-190-3368
NSN 5975-01-490-0353
NSN 5998-00-156-6236
NSN 6650-00-784-9222
NSN 5905-00-147-7298
NSN 5930-01-296-8449
NSN 6685-01-207-6736
NSN 4140-01-534-3962
NSN 6620-00-570-9774
NSN 5920-00-827-1094
NSN 2925-01-293-2986
NSN 6685-00-403-1226