Flanged Button Head Socket Cap Screw Bolt-Allen Socket Drive-Carbon Steel ISO7380-2

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1.Superior Performance – Precision-manufactured from heat-treated alloy steel (10.9 or 12.9 grade), these flanged button head socket cap screws deliver exceptional tensile strength (≈ 150-180 ksi / 1000-1240 MPa) and core hardness (HRC 35-44). The integrated flange eliminates the need for separate washers while distributing clamping pressure over a wider area than standard fasteners. Their low-profile button head combines minimal protrusion with a smooth dome surface that resists impact damage and prevents snagging hazards.

2.Comprehensive Application Range – Widely used in high-stress assemblies including automotive powertrains, motorcycle components, industrial machinery, robotics frames, conveyor systems, and precision tooling fixtures. The flange-button combination excels in applications with vibration, thin materials, or oversized holes where conventional fasteners might loosen or pull through. Available in fine-pitch metric and UNC thread series for both new designs and maintenance replacement.

3.Streamlined Installation – The deep internal hex socket accepts standard Allen wrenches or power bits, allowing rapid tightening with excellent torque transfer and minimal cam-out risk. The integrated flange eliminates washer handling, cutting assembly time by up to 30% compared to conventional bolted connections. Precision-rolled threads with chamfered lead-ins prevent cross-threading and ensure smooth engagement, while the under-head flange automatically centers in countersunk holes.

4.Verified Quality – Manufactured in ISO 9001-certified facilities to strict dimensional standards (DIN 7380-2/ISO 7380-2) and mechanical property requirements (ISO 898-1). Each production lot undergoes comprehensive testing including surface hardness measurement, tensile strength verification, magnetic particle inspection, and thread gauge validation. Fasteners are supplied with black oxide or zinc phosphate finish for basic corrosion protection and include traceability marking. Available with EN 10204 3.1 material certificates upon request for critical applications requiring documented proof of mechanical properties.