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 6240-01-421-4025
NSN 7035-01-382-4413
NSN 6220-01-383-0792
NSN 5999-00-523-0460
NSN 6130-00-334-9227
NSN 6610-00-171-5015
NSN 6650-01-648-3903
NSN 5945-01-321-7820
NSN 6685-01-573-6443
NSN 5930-01-531-6464
NSN 6130-01-652-9978
NSN 6320-01-409-1388