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 4140-00-112-0630
NSN 5975-00-111-3208
NSN 2925-01-651-8683
NSN 7035-00-946-2642
NSN 5895-01-473-0588
NSN 6130-01-147-3932
NSN 5985-00-175-7673
NSN 6645-00-216-6126
NSN 5999-00-593-2877
NSN 2925-01-588-3507
NSN 6650-00-510-3786
NSN 6130-01-411-3373