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 4140-01-053-2027
NSN 6645-00-160-0503
NSN 5945-00-801-1250
NSN 6220-00-183-0369
NSN 6685-01-372-1167
NSN 4140-01-530-2172
NSN 5945-00-906-7330
NSN 7035-01-604-9813
NSN 6130-01-652-0718
NSN 6620-00-366-1365
NSN 5975-00-587-4871
NSN 5835-01-390-4667