Name：bolts and nuts
Descriptions:

Material:	40Cr
Grade:	10.9 or 12.9
Tensile Strength:	150000P.S.I-170000P.S.I
Hardness:	HRC 32-42

-Plow bolt
-Track bolt
-Segment bolt
-Hex bolt
-Wheel stud
........

We are also can make as your drawing.
More information you want, pls contact with our sales