3a thread class right-hand 0.438" thread length flat fillister head style 0.047" hole diameter 32 thread quantity per inch cadmium surface treated unrc thread series
Used on b-1b ldg. 3b thread class right-hand 16 thread quantity per inch name on drawing, thread bushing-repair, nomenclature threaded bushing un thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.063" grip length pr" code- parts are manufactured bare; if lube is required, use par 90 only. passivate sleeve surface treated
3a thread class right-hand 1.5575" grip length 37300 double pounds per square inch shear strength grit blast top of head, with color light blue on thread end. unjf thread series