Reduced id one end 0.531 in. Dia
No other part numbers with same form, fit, and function found.
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 6135-01-150-5382
NSN 5930-00-688-8103
NSN 5935-01-492-6607
NSN 6620-01-436-5661
NSN 5855-01-380-6186
NSN 6610-00-112-2698
NSN 5930-01-160-8539
NSN 5895-01-100-3472
NSN 6145-01-496-5529
NSN 6650-01-188-4516
NSN 5925-00-467-6213
NSN 5905-01-229-0718