2a and b8
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 6220-00-535-3230
NSN 6650-01-437-8852
NSN 6685-00-783-8875
NSN 5930-01-048-4117
NSN 5935-01-188-7658
NSN 5895-01-484-9855
NSN 6135-01-071-4923
NSN 5910-00-681-3003
NSN 6620-00-025-1889
NSN 6620-01-131-9620
NSN 5925-00-827-0927
NSN 5895-01-413-8297