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 6220-00-478-6480
NSN 6620-01-064-0366
NSN 5950-00-866-0409
NSN 6650-00-905-9317
NSN 6135-01-394-4160
NSN 5996-00-436-3692
NSN 6685-01-024-9508
NSN 6240-00-999-7806
NSN 6620-01-525-3650
NSN 5998-01-376-7160
NSN 6685-01-085-5977
NSN 5999-00-884-0054