flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 33000 single pounds per square inch shear strength anodize or chromate surface treated
3a thread class right-hand 0.444" thread length oval countersunk head style 1.240" grip length 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.380" thread length flat countersunk undercut head style 32 thread quantity per inch furnished with one o-ring unjf thread series
3a thread class right-hand 0.800" thread length double hexagon extended washer head style 28 thread quantity per inch with undercut between shoulder unjf thread series
3a thread class right-hand 0.800" thread length double hexagon extended washer head style 28 thread quantity per inch with undercut between shoulder unjf thread series
3a thread class right-hand 0.740" thread length double hexagon extended washer head style 28 thread quantity per inch with undercut between shoulder unjf thread series
3a thread class right-hand 0.550" thread length square head style 28 thread quantity per inch shoulder area only may be chromium plated per AMS2406; plating not permitted on other areas; underside of head chamfered 45 deg by 0.060 in. min, 0.070in. max long unjf thread series
3a thread class right-hand 0.545" thread length double hexagon w/hole head style 20 thread quantity per inch undercut 0.075 to 0.100 in. wide unjf thread series
