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 5998-01-605-9174
NSN 5990-00-827-0684
NSN 5996-01-218-4246
NSN 2925-01-212-1040
NSN 6620-01-431-9176
NSN 6645-00-433-0695
NSN 6320-00-070-4544
NSN 5935-01-491-0822
NSN 5895-00-991-3418
NSN 6650-01-290-8705
NSN 6685-01-464-8406
NSN 6620-01-555-5218