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Products Hex Flange Screws,Grade 8 Typical Material：   Medium Carbon Alloy Steel Material and Mechanical Properties：  SAE J429 Grade 8. Dimensions：   IFI-111 Typical Hardness：   HRC 33-39 on sizes 1/4 to 3/4 inch Tensile Strength：   150,000 PSI Minimum on sizes 1/4 to 3/4 inch   Detailed

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