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 4140-00-222-2186
NSN 6220-01-398-6205
NSN 6645-01-611-8781
NSN 5945-00-130-2618
NSN 5855-01-417-3250
NSN 6645-01-118-5300
NSN 5925-00-739-2240
NSN 5998-01-377-0125
NSN 5910-00-854-8645
NSN 4140-01-052-5221
NSN 6135-01-628-9257
NSN 6620-01-394-4042