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 5855-01-225-5855
NSN 5925-01-281-7511
NSN 5985-01-151-1295
NSN 5990-00-497-9234
NSN 4140-01-410-8615
NSN 5935-01-317-1928
NSN 5990-01-443-2931
NSN 6685-01-463-4184
NSN 5960-01-539-1956
NSN 6105-01-414-7100
NSN 6240-01-534-5829
NSN 5895-01-569-2218