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 5985-00-079-0598
NSN 5998-01-601-3492
NSN 6220-01-386-5613
NSN 4140-00-928-5657
NSN 5905-01-274-4297
NSN 5945-01-468-0682
NSN 6145-01-469-6276
NSN 5998-01-536-9847
NSN 6110-00-781-4285
NSN 6145-01-215-3869
NSN 6240-01-369-2956
NSN 5999-01-277-8755