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 5975-01-397-4810
NSN 5925-00-682-4096
NSN 5960-00-289-6591
NSN 6145-01-215-0178
NSN 5920-00-357-0260
NSN 5910-01-013-9388
NSN 4140-01-114-9097
NSN 6150-00-202-9150
NSN 6220-00-617-9616
NSN 5990-00-840-6571
NSN 6130-01-106-7100
NSN 6650-01-275-9778