0.125" hole diameter altrd from MS15795-803 wash primeper mil-c-8514 f-66, method 1, zinc chromate prime per tt-p-1757, composition g, color y (F53, method 1-yellow) 415913
3b thread class right-hand 32 thread quantity per inch bracket only hardness rockwell c scale 40.0 min, 50.0 max; nut float 0.025 in. min measured radially; passivated sleeve or boss portion only, per fed spec qq-p-35 cadmium surface treated