3/8-16 unc-2a; steel, cad, plate
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.)
NSN 6110-01-013-8103
NSN 5930-01-650-6074
NSN 6320-01-615-7202
NSN 5905-00-072-5994
NSN 5950-00-660-9497
NSN 6105-01-483-2102
NSN 5905-00-494-1817
NSN 5950-00-290-8090
NSN 4140-00-087-4611
NSN 6145-00-493-4073
NSN 4140-01-486-1436
NSN 6645-01-311-2643