universal head style 0.063" grip length ns" letters after the material code "b" indicate no preference to lock type (may be visible or internal) . rivets with no letter code (indicating visible lock type) chromate sleeve surface treated
Used on w/s: aircraft, f-16; aircraft, thunderbolt ii, a-10; global hawk high altitude-long endurance unmanned aerial. universal head style 0.251" grip length
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.406" grip length 2340 single pounds per square inch shear strength cadmium surface treated