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 4140-00-283-6843
NSN 5925-00-302-4637
NSN 5975-00-789-6209
NSN 6220-01-139-3520
NSN 6610-01-517-6425
NSN 5975-01-214-3516
NSN 6320-00-174-1362
NSN 6650-00-221-7119
NSN 5985-01-055-5297
NSN 5945-01-012-2448
NSN 6220-00-635-8818
NSN 5930-00-357-9649