A 10.9 grade flange outer hexagonal fine thread bolt is a specialized type of fastener known for its strength, durability, and specific design features. This bolt is commonly used in industrial applications, machinery, automotive engineering, and construction, where reliable and secure fastening is essential.
The "10.9 grade" designation refers to the bolt's material and strength characteristics, as per the metric system for grading bolts. In this context, the number before the decimal point represents the tensile strength of the bolt material in hundreds of megapascals (MPa). So, a 10.9 grade bolt indicates a minimum tensile strength of 1000 MPa. This signifies its ability to withstand substantial loads and resist deformation under high stress conditions.
The "flange" aspect of the bolt refers to the integrated flanged washer or collar located under the hexagonal head. The flange serves multiple purposes, including spreading the load over a wider area, providing additional support, and acting as a built-in washer. This design helps prevent the bolt head from sinking into the material and also improves distribution of the clamping force.