S-91290A056 M18 x 120 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 the most demanding heavy-duty applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the black-oxide finish on alloy steel extends service life and maintains integrity in harsh industrial environments.
- High hardness rating (Rockwell C37) provides excellent wear resistance, minimizing damage during installation and prolonged use.
- Precise Class 5g6g thread fit guarantees smooth assembly and secure fastening, improving installation efficiency and joint reliability.
- Standard hex socket drive (14mm) allows for high-torque application with common tools, ensuring a tight, flush fit in confined spaces.
- Compliance with DIN 912/ISO 4762 standards assures consistent quality, dimensional accuracy, and global interchangeability for engineering projects.
- RoHS 3 and REACH compliance meets stringent environmental and safety regulations, making them suitable for regulated industries and international supply chains.
Professional Applications & Engineering Value
Engineered for high-stress applications, this M18 socket head cap screw delivers critical performance where failure is not an option. The black-oxide alloy steel construction combats rust and oxidation, making it ideal for machinery, automotive assemblies, and construction equipment exposed to moisture and chemicals. Its Class 12.9 strength rating and coarse thread (2.5mm pitch) provide superior clamping force and vibration resistance, preventing loosening in dynamic loads. The partially threaded design concentrates stress appropriately, while the standard socket head ensures easy access in tight spaces, streamlining maintenance and reducing downtime in industrial operations.
Specification Summary & Compliance
This metric socket head cap screw features an M18 x 2.5mm coarse thread with a Class 5g6g thread fit per ISO standards, ensuring precise engagement. The 120mm length includes a 48mm minimum thread length and is manufactured to DIN 912 (identical to ISO 4762) specifications for dimensional consistency. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming adherence to environmental and health safety standards for industrial use.
