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 5975-00-234-0852
NSN 5975-00-609-5601
NSN 5855-01-586-5538
NSN 5855-00-451-6155
NSN 5990-01-291-7723
NSN 5935-00-353-3293
NSN 5998-00-186-8583
NSN 5895-01-440-9457
NSN 6320-01-379-0602
NSN 6240-00-163-5143
NSN 6145-01-307-7954
NSN 5930-01-231-8562