S-91306A781 M8 x 50 mm ISO 7380 Steel Button Head Hex-Drive Screws
Steel Button Head Hex-Drive Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional tensile strength with 140,000 psi rating ensures reliable performance in high-stress applications, reducing failure risks
- Superior corrosion resistance from zinc-plated alloy steel construction extends service life in harsh industrial environments
- Precise Class 6g thread fit guarantees smooth installation and secure fastening with consistent engagement
- Optimized hex drive design with 5mm drive size provides efficient torque transfer and reduces tool slippage
- Fully threaded M8x1.25mm coarse pitch delivers maximum grip length and faster assembly in various materials
- Class 10.9 strength grade offers high fatigue resistance for demanding mechanical applications
- Compliant with international standards including ISO 7380 ensures interoperability and quality consistency
Professional Applications & Engineering Value
These M8 hex button head screws deliver critical engineering advantages through their zinc-plated alloy steel construction and Class 10.9 strength rating. The combination of 140,000 psi tensile strength and Rockwell C32 hardness provides exceptional resistance to vibration loosening and mechanical stress, solving common failure points in heavy machinery, automotive assemblies, and industrial equipment. The fully threaded metric coarse pitch design ensures maximum thread engagement in both metals and composites, while the rounded button head profile offers a low-profile finish that minimizes snagging hazards. With ISO 7380 compliance and corrosion-resistant zinc plating, these fasteners maintain performance integrity in demanding environments where chemical exposure and weather elements are concerns.
Specification Summary & Compliance
This M8 x 1.25mm screw features Class 6g thread tolerance for precision fit and fully threaded construction per metric standards. Manufacturing complies with ISO 7380 specifications for dimensional accuracy and performance. The fastener meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements, ensuring safe use in regulated industries. With 50mm length and right-hand thread direction, it maintains consistent threading for reliable assembly operations.
