With triangular base on bottom ofnut with 3 each drilled holes 0.070 inch id by 0.125 inch long by 0.105 inch thick
A nut, circular in shape, which may have wrenching facilities such as flats, holes, protrusions, slots or splines in or on the periphery or in the face opposite the bearing surface. For items having a thickness (or height) exceeding two times the outside diameter, use post, electrical-mechanical equipment. See also nut (1), plain, knurled. (when height or thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
Classification: Nuts of iron or steel
NSN 6620-01-426-2220
NSN 4140-01-414-7093
NSN 2925-00-560-2476
NSN 5925-00-283-6528
NSN 5855-01-656-0025
NSN 6650-01-185-7896
NSN 6650-01-049-1881
NSN 5910-01-123-0685
NSN 6650-01-633-9147
NSN 5996-01-255-0397
NSN 5960-01-454-7064
NSN 5905-00-222-6276