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 6240-00-434-3771
NSN 6645-00-371-1861
NSN 6145-00-598-9397
NSN 5935-01-401-5324
NSN 5915-01-166-5712
NSN 5999-00-979-8732
NSN 5915-00-831-1749
NSN 5960-01-082-2119
NSN 5930-00-144-3240
NSN 5990-00-434-9348
NSN 7035-01-396-3343
NSN 6240-01-334-6106