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 7035-01-334-5855
NSN 5905-01-334-7889
NSN 5999-01-321-2922
NSN 5910-00-540-5974
NSN 6130-00-930-3158
NSN 6320-01-397-9995
NSN 5950-01-442-1334
NSN 5855-01-242-8428
NSN 4140-01-259-5828
NSN 5855-00-058-1293
NSN 5905-01-435-6357
NSN 5996-00-249-1104