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 6240-00-805-0955
NSN 5998-01-229-7692
NSN 5925-01-413-7673
NSN 4140-01-450-3823
NSN 5915-01-111-9376
NSN 6135-00-932-3136
NSN 5990-01-250-4198
NSN 6685-01-655-3436
NSN 5935-01-132-4268
NSN 6240-00-423-9575
NSN 6220-01-311-8865
NSN 6220-00-704-9823