Steel 12l14 or c12l14 per qq-s-637, anneal per mcp 32, cadmium plate per qq-p-416 type ii class 2 .0003-.0005thk, length 1.200, height min 1.100 max 1.135, hex width 1.125, 1.125-28 un-2a threads 1.1238-1.1173 major diameter 1.1006-1.0966 pd perfect thd to dim shown.40 ref hex flats on major diameter permissible.