Used on 4210-01-486-1035 truck, fire fighting. 3a thread class right-hand 1.440" thread length flat chamfer head style 16 thread quantity per inch oxide surface treated unrc thread series
3a thread class right-hand 0.875" thread length flat chamfer head style 32 thread quantity per inch material; corrosion resistant steel unrf thread series
2a thread class right-hand 1.750" thread length flat chamfer head style 11 thread quantity per inch material; alloy steel, head; drilled unrc thread series
3a thread class right-hand 0.900" thread length flat chamfer head style 18 thread quantity per inch conforming to chemistry of ams 5731or ams 5737 of ff-s-86 unrf thread series