S-91280A148 M4 x 30 mm ISO 4017, DIN 933, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws
Medium-Strength Metric Class 8.8 Steel Hex Head 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
- Superior corrosion resistance with zinc plating, extending service life in demanding industrial environments.
- High tensile strength of 110,000 psi (Class 8.8) ensures reliable performance under heavy loads and vibrations.
- Robust Rockwell C21 hardness provides excellent wear resistance and prevents thread deformation.
- Coarse 0.7mm pitch thread enables faster assembly and reduced risk of cross-threading in various materials.
- Full threading along the 30mm length offers maximum grip and adjustment flexibility in deep applications.
- External hex drive design allows for high torque application with standard tools, simplifying maintenance.
- Compliance with ISO 4017, DIN 933, RoHS 3, and REACH guarantees international quality and environmental safety standards.
Professional Applications & Engineering Value
This M4 hex head screw is engineered to address critical fastening challenges in industrial machinery, construction, and automotive assemblies. The Class 8.8 steel construction combined with a zinc-plated finish provides exceptional resistance to corrosion and mechanical stress, reducing maintenance frequency and failure risks. Its fully threaded metric coarse design with a 0.7mm pitch ensures quick, secure installation in metals and composites, while the external hex drive facilitates easy tightening in confined spaces. Ideal for applications demanding high tensile strength and long-term reliability, this screw minimizes downtime and enhances structural integrity in rigorous environments.
Specification Summary & Compliance
This screw adheres to precise dimensional standards with a Thread Fit of Class 6h and 30mm length, ensuring consistent performance. It meets ISO 4017 and DIN 933 specifications for hex head screws, along with ISO 898 for mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it is free from hazardous substances, supporting safe and sustainable industrial use.
