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 5975-01-360-2527
NSN 5998-00-519-0741
NSN 5950-00-491-2600
NSN 6320-00-977-3930
NSN 5960-00-111-8456
NSN 4140-00-832-0459
NSN 6610-00-506-1977
NSN 5935-00-263-3641
NSN 5935-01-381-1149
NSN 6105-01-256-4989
NSN 5950-01-382-0636
NSN 5985-01-222-0039