ISO 4762 SOCKET HEAD CAP SCREW — Advanced Rule Matrix

SCREWS · Cross-reference compatibility analysis for material, finish & size combinations

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    Cross-Rule Compatibility Matrix

    Compatibility between sizes, material grades, and surface finishes under ISO 4762.

    Size Material / Grade Surface Finish Compatibility Notes
    M612.9Phosphate⚠️ ConditionalRequires engineering verification
    M610.9Zinc Clear✅ CompatibleStandard combination
    M68.8Black Oxide⚠️ ConditionalRequires engineering verification
    M64.6Phosphate⚠️ ConditionalRequires engineering verification
    M610.9Dacromet✅ CompatibleHigh corrosion protection
    M6A4-80Black Oxide❌ IncompatibleStainless cannot be black oxide coated
    M6A2-70Dacromet⚠️ ConditionalRequires engineering verification
    M6A2-70Zinc Clear⚠️ ConditionalRequires engineering verification
    M612.9Black Oxide⚠️ ConditionalRequires engineering verification
    M68.8Dacromet✅ CompatibleHigh corrosion protection
    M68.8Zinc Clear✅ CompatibleStandard combination
    M610.9Phosphate⚠️ ConditionalRequires engineering verification
    M6A4-80Zinc Clear⚠️ ConditionalRequires engineering verification
    M64.6Black Oxide⚠️ ConditionalRequires engineering verification
    M6A4-80Dacromet⚠️ ConditionalRequires engineering verification
    M6A2-70Phosphate⚠️ ConditionalRequires engineering verification
    M612.9Zinc Clear✅ CompatibleStandard combination
    M612.9Dacromet✅ CompatibleHigh corrosion protection
    M68.8Phosphate⚠️ ConditionalRequires engineering verification
    M64.6Dacromet✅ CompatibleHigh corrosion protection
    M610.9Black Oxide⚠️ ConditionalRequires engineering verification
    M64.6Zinc Clear✅ CompatibleStandard combination
    M6A4-80Phosphate⚠️ ConditionalRequires engineering verification
    M6A2-70Black Oxide❌ IncompatibleStainless cannot be black oxide coated

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    Standard References: Official ISO standards · ISO 4762 reference (fasteners.eu)

    ISO 4762 Socket Head Cap Screw per ISO 4762 specification, available in 4.6 grade with Zinc Clear finish. Engineered for industrial OEM applications requiring 400.0 MPa tensile strength and reliable long-term fastening performance.