S-90128A219 M4 x 30 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws
Alloy Steel Socket 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
- Exceptional strength-to-weight ratio with Class 12.9 rating and 170,000 PSI tensile strength for reliable performance in demanding applications
- Superior corrosion resistance through zinc-plated alloy steel construction, extending service life in harsh industrial environments
- Precision hex drive engagement with 3mm drive size ensuring secure tool fit and reduced stripping risk during installation
- Optimized thread design with M4 coarse thread (0.7mm pitch) providing faster assembly and reduced cross-threading incidents
- Controlled partial threading allowing precise clamping force distribution and improved joint stability
- High hardness rating of Rockwell C37 maintaining thread integrity and drive features under repeated use
- Standard socket head profile enabling flush mounting and access in confined spaces
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these M4 socket head cap screws solve critical fastening challenges in machinery, automotive, and equipment manufacturing. The zinc-plated alloy steel construction provides essential corrosion protection while maintaining the Class 12.9 strength rating required for high-stress connections. The partially threaded design ensures optimal load distribution, preventing joint failure in vibration-prone environments. With coarse metric threading and precise Class 5g6g thread fit, these screws enable rapid assembly without compromising connection integrity, making them ideal for production lines requiring both speed and reliability. The standardized socket head profile accommodates space-constrained applications while the hex drive system delivers maximum torque transmission.
Specification Summary & Compliance
Manufactured to DIN 912/ISO 4762 standards with Class 5g6g thread tolerance ensuring dimensional precision and interchangeability. The 30mm length with 20mm minimum thread engagement provides versatile fastening solutions. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting international environmental and safety requirements for industrial components.
