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Track roller bolt
1-we own factory to manufacture
2-ISO certificaton
3-good quality track roller bolt
4- Grade: 12.9
The mechanical grade is 12.9, case hardening HRC 38-42, Material is 40CR,
and the surface is treated with bluing, screw thread has two type description,
one is the metric system:M12-M24-6g, another is denominator system:1/2"-1"/4--2A.
the specification can be customized.
Track roller bolt 12.9 grade
