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 4140-01-551-2798
NSN 5998-01-391-3775
NSN 6620-00-932-4306
NSN 6145-00-643-4962
NSN 5925-01-456-4429
NSN 6150-01-418-8715
NSN 2925-00-398-0253
NSN 6645-01-160-7707
NSN 5950-01-563-3467
NSN 5855-00-548-4742
NSN 5895-01-545-4659
NSN 2925-00-139-8309