Top and bottom surfaces countersunk
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.)
Classification: Nuts of iron or steel
NSN 6650-01-345-2866
NSN 6620-01-249-8696
NSN 6620-01-589-5411
NSN 6220-00-991-8280
NSN 6130-00-923-3383
NSN 6150-01-271-3879
NSN 5910-01-461-1514
NSN 5935-01-594-2189
NSN 7035-01-069-3537
NSN 6645-01-435-4073
NSN 6110-01-432-2442
NSN 5895-01-042-7324