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 4140-01-415-7988
NSN 4140-00-215-8593
NSN 5960-01-320-7675
NSN 6685-01-224-2529
NSN 5965-01-540-8711
NSN 2925-00-533-6262
NSN 6645-01-584-0892
NSN 5915-00-644-5735
NSN 5999-00-557-3541
NSN 6620-01-057-9621
NSN 5965-01-064-2107
NSN 7035-01-537-1827