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 2925-01-248-6028
NSN 6130-00-954-2859
NSN 6150-00-100-9226
NSN 6110-00-850-2860
NSN 5975-00-684-6835
NSN 6610-00-963-9435
NSN 6620-01-443-3526
NSN 6645-01-069-8746
NSN 6150-00-690-2607
NSN 5996-00-101-9667
NSN 5930-01-267-1420
NSN 5990-01-134-7756