1 7/16 in x 12 un jam hex nut
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: Parts of armored fighting vehicles,motorized, whether or not fitted with weapons
NSN 5835-00-251-9138
NSN 5855-01-082-3693
NSN 6220-01-325-6277
NSN 5999-01-424-7642
NSN 4140-01-244-2449
NSN 5965-01-325-0627
NSN 6150-00-864-5114
NSN 6650-01-524-8171
NSN 6320-01-543-1194
NSN 5895-01-243-9651
NSN 6110-00-816-9715
NSN 5895-00-203-2379