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 5996-01-056-4952
NSN 5930-01-157-9675
NSN 5920-01-411-5512
NSN 5950-00-487-4114
NSN 5965-01-633-8849
NSN 2925-00-468-5273
NSN 5965-00-004-6371
NSN 6145-01-312-4990
NSN 5996-01-463-5630
NSN 5895-01-491-3817
NSN 5905-01-159-2636
NSN 5895-00-171-0412