Hexagon head bolts with nuts and washers Metric thread MATERIAL : ALLOY STEEL 24CR MO5 SIZE : M16 LENGTH,UNDER HEAD : 65MM LENGTH,THREAD : 38MM THREAD LENGTH TO ISO 888 BOLT HEADS TO BE CHAMFERED DIMENSIONS, WASHERS : BS 4320 - TABLE 3(NORMAL) DIMENSIONAL SPEC : ISO R 272 TYPE,THREAD : COARSE PITCH : ISO 724 TOLERANCE,DIMENSIONAL : ISO R 733 TOLERANCE,THREAD,BOLT : ISO 965/I APPROXIMATELY BEARING OR WASHER FACED ON THE BOTTOM OF BOLT HEAD. 40 pcs.