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Case-hardened steel is the primary material, allowing the tip to drill while the body remains tough enough to handle torque without snapping. din 7504 k standard pdf
The "K" variant specifically defines a hexagonal head with an integrated, molded-on washer face. This unique design provides a larger bearing surface than a standard hex head, allowing for optimal load distribution and minimizing damage to the fastened substrate. 2. Key Dimensional Specifications of DIN 7504 K To assist you further with your engineering project,
The external dimension of the hexagon head, determining the socket size required for installation (typically 5.5mm, 7mm, 8mm, or 10mm). din 7504 k standard pdf