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 5990-01-453-3552
NSN 6145-00-345-2565
NSN 5920-01-471-9235
NSN 5999-01-649-2810
NSN 6220-01-565-5572
NSN 5990-01-411-7706
NSN 5855-00-058-1293
NSN 5930-01-363-9412
NSN 5996-00-909-4753
NSN 5965-00-882-6949
NSN 6320-01-215-1133
NSN 6135-00-008-5345