S-91280A046 M4 x 25 mm ISO 4017, DIN 933 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 tensile strength of 110,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
- Class 8.8 strength grade provides excellent durability and load-bearing capacity, ideal for industrial machinery and equipment assemblies.
- Fully threaded design offers maximum grip and uniform clamping force along the entire length, enhancing joint stability.
- External hex drive head allows for easy installation and removal with standard tools, improving assembly efficiency and maintenance.
- Class 6g thread fit ensures precise engagement with mating components, minimizing play and vibration-related loosening.
- Black steel construction with Rockwell C21 hardness provides good corrosion resistance and wear longevity in various environments.
- Compliance with ISO 4017 DIN 933 guarantees dimensional accuracy and interchangeability, supporting global manufacturing standards.
Professional Applications & Engineering Value
This M4 hex head screw is engineered to address critical challenges in industrial fastening, where vibration resistance, high tensile loads, and long-term reliability are paramount. The Class 8.8 steel material, combined with a fully threaded metric design and coarse thread pitch of 0.7mm, ensures secure fastening in metal frameworks, automotive components, and machinery assemblies. The external hex drive facilitates quick installation with common wrenches, reducing assembly time while maintaining Rockwell C21 hardness to withstand mechanical stresses. Ideal for applications requiring consistent performance under dynamic loads, these screws provide a robust solution that minimizes maintenance needs and enhances operational safety in industrial fasteners systems.
Specification Summary & Compliance
This product adheres to ISO 4017 DIN 933 specifications, ensuring precise dimensions including M4 thread size, 0.7mm pitch, and 25mm length with Class 6g thread fit tolerance. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for environmental safety, and the Class 8.8 strength grade confirms consistent mechanical properties as per international standards.
