3a thread class right-hand flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.140" grip length 40 thread quantity per inch used on pratt & whitney engines &comp, tf-30/expander silver plated silver expander surface treated unjc thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.219" grip length 5240 double pounds per square inch shear strength head cadmium body surface treated
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.126" grip length 1565 single pounds per square inch shear strength cadmium sleeve surface treated
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.073" grip length 1390 single pounds per square inch shear strength lock ring nickel-copper alloy qq-n-281 anodize sleeve or chromate sleeve surface treated