S-91290A971 M30 x 200 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 tensile strength of 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the black-oxide finish prolongs service life in harsh industrial environments, minimizing maintenance needs.
- High hardness rating (Rockwell C37) provides excellent wear resistance, maintaining thread integrity through repeated use.
- Precise Class 5g6g thread fit guarantees smooth installation and secure fastening, improving assembly efficiency.
- Optimized partially threaded design allows for focused clamping force where needed, enhancing joint stability.
- Heavy-duty Class 12.9 rating delivers maximum load-bearing capacity for critical mechanical applications.
- Standard hex drive compatibility with 22mm tools enables quick installation and removal, saving valuable maintenance time.
Professional Applications & Engineering Value
This M30 socket head cap screw addresses critical engineering challenges in heavy machinery, automotive manufacturing, and structural applications where vibration resistance and high tensile strength are paramount. The black-oxide alloy steel construction provides superior protection against corrosion while maintaining the Class 12.9 strength rating under extreme conditions. The coarse 3.5mm pitch metric thread ensures rapid assembly in thick materials, while the partially threaded design concentrates clamping force precisely where needed. Engineers specify this DIN 912/ISO 4762 compliant fastener for critical joints requiring reliable performance in demanding environments, from industrial equipment to construction applications where failure is not an option.
Specification Summary & Compliance
This metric socket head cap screw features M30 x 3.5mm coarse threads with Class 5g6g thread fit tolerance ensuring precision mating. The 200mm length provides 72mm minimum thread engagement for secure fastening. Manufactured to DIN 912/ISO 4762 specifications with Class 12.9 strength classification, this fastener delivers 170,000 psi tensile strength and Rockwell C37 hardness. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use worldwide.
