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 6145-01-347-3336
NSN 6220-01-199-3825
NSN 5910-01-350-6685
NSN 6150-01-223-8463
NSN 5998-01-451-4328
NSN 6105-01-055-8187
NSN 5895-00-539-8322
NSN 6135-01-180-9611
NSN 6240-01-439-5363
NSN 5905-01-580-1034
NSN 5915-01-172-7523
NSN 6150-01-322-6388