BS EN 4850:2022标准规定了螺钉的技术要求和分类，适用于航空航天领域。该标准适用于100°埋头、螺旋驱动凹槽、粗公差普通柄、中长螺纹、镀镉合金钢螺钉，其分类为1 100 MPa（常温）/235 °C。

该标准要求螺钉的材料必须符合EN 2303标准，且必须经过热处理。螺钉的表面处理必须符合EN 4164标准，即镀镉处理。螺钉的尺寸和公差必须符合EN 4163标准。

螺钉的头部为100°埋头，螺旋驱动凹槽为标准的螺旋形状。螺钉的柄为粗公差普通柄，中长螺纹。螺钉的分类为1 100 MPa（常温）/235 °C，即在常温下承受1 100 MPa的拉伸强度，在235 °C下承受相同的拉伸强度。

该标准的实施可以保证螺钉的质量和性能，确保其在航空航天领域的应用安全可靠。

相关标准
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