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 5996-01-418-8485
NSN 5998-01-616-2514
NSN 5985-00-021-6452
NSN 6130-01-552-4753
NSN 5996-01-400-3558
NSN 6685-01-364-8552
NSN 5920-01-121-2368
NSN 7035-01-173-5503
NSN 6645-00-816-5337
NSN 6150-01-371-6246
NSN 5990-01-288-7393
NSN 5905-00-432-7845