S-91290A076 M20 x 140 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 hardness (Rockwell C37) provides excellent wear resistance, extending the screw's service life in demanding environments.
- Black-oxide coating on alloy steel offers enhanced corrosion resistance, ideal for industrial settings where moisture and chemicals are present.
- M20 x 2.5mm coarse threads with Class 5g6g fit enable quick and secure installation, minimizing assembly time and improving efficiency.
- Partially threaded design allows for precise clamping force control, preventing loosening under vibration and dynamic loads.
- Compliance with DIN 912/ISO 4762 standards guarantees dimensional accuracy and interchangeability, ensuring compatibility with metric systems.
- RoHS 3 and REACH compliant materials support environmental and safety regulations, making them suitable for global supply chains.
Professional Applications & Engineering Value
This Class 12.9 socket head cap screw is engineered to address critical challenges in heavy-duty machinery, automotive assembly, and construction equipment. The black-oxide alloy steel construction combats rust and wear, while the M20 coarse thread with a 2.5mm pitch ensures robust engagement in materials prone to stripping. With a partially threaded shank, it provides optimal grip without over-tightening, reducing stress concentrations. Ideal for applications requiring high tensile strength and corrosion resistance, such as engine mounts and structural frames, this screw delivers consistent performance under extreme conditions, backed by DIN 912/ISO 4762 certification for reliability.
Specification Summary & Compliance
This screw features precise Class 5g6g thread fit per metric standards, ensuring tight tolerances for secure fastening. It adheres to DIN 912/ISO 4762 specifications for dimensional accuracy, including a 140mm length and 30mm head diameter. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms the use of safe, regulated materials, free from hazardous substances, making it suitable for industrial and export markets.
