2a and b8
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 6145-01-013-6116
NSN 5895-00-862-5564
NSN 6620-01-494-9858
NSN 5960-01-445-3622
NSN 5920-01-218-3803
NSN 5910-01-125-6762
NSN 6240-01-369-4632
NSN 6320-01-531-4997
NSN 5998-00-233-6401
NSN 5895-01-641-3195
NSN 5965-00-799-5490
NSN 6610-01-159-0438