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: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 6240-01-595-6812
NSN 5905-01-368-8772
NSN 6685-01-414-8811
NSN 6130-01-033-9491
NSN 2925-00-233-5644
NSN 5950-00-235-9572
NSN 5998-00-905-6772
NSN 6135-01-416-3181
NSN 5935-00-448-8872
NSN 5998-01-604-9538
NSN 6220-00-379-4044
NSN 6645-01-423-7760