Used on ah-1t/w acft. 3b thread class right-hand flush countersunk head style 0.375" grip length 28 thread quantity per inch thread length 0.750 in. unf thread series
3a thread class right-hand 0.252" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
Used on 6220-01-174-1726. 2a thread class right-hand 1.000" thread length dee head style 32 thread quantity per inch spec mil-f-13926 applies; screw shall be in accordance with requirementsfor MS35276-268 except as specified unf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.595" grip length 5240 double pounds per square inch shear strength cadmium bolt surface treated