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 4140-00-410-2581
NSN 5996-01-078-1080
NSN 6645-01-103-0901
NSN 5930-01-124-0167
NSN 6320-01-397-9995
NSN 5895-00-231-1461
NSN 5998-01-530-1095
NSN 6135-00-935-8769
NSN 6110-01-041-1631
NSN 6645-01-023-2180
NSN 6685-01-659-3800
NSN 5999-01-387-3283