S-91290A284 M33 x 120 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance under extreme loads, reducing the risk of fastener failure in critical applications.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life and maintaining integrity in harsh industrial environments.
• High hardness rating (Rockwell C37) provides excellent wear resistance, minimizing deformation and maintaining precise fit over repeated use.
• Precision Class 5g6g thread fit offers consistent engagement and vibration resistance, ensuring stable connections in dynamic machinery.
• Partially threaded design allows for concentrated clamping force where needed, improving joint security and simplifying assembly.
• 24mm hex drive compatibility enables high-torque installation with standard tools, speeding up maintenance and reducing labor costs.
• Compliance with DIN 912/ISO 4762 standards guarantees dimensional accuracy and interchangeability, facilitating global sourcing and replacement.

Professional Applications & Engineering Value

This M33 socket head cap screw is engineered to address demanding industrial challenges where high tensile strength and durability are non-negotiable. The black-oxide alloy steel construction resists rust and wear, making it ideal for heavy machinery, automotive assemblies, and construction equipment exposed to moisture and stress. Its coarse metric thread (M33x3.5mm) and Class 12.9 strength rating ensure secure fastening in high-vibration environments, preventing loosening and maintaining alignment. The partially threaded rod design focuses clamping force on specific sections, reducing the risk of thread stripping in soft materials. With a 120mm length and standard hex drive, it simplifies installation in confined spaces, boosting efficiency in manufacturing and maintenance operations while meeting rigorous DIN 912/ISO 4762 specifications for reliability.

Specification Summary & Compliance

This screw features precise Class 5g6g thread fit per metric standards, ensuring consistent tolerance and performance. It complies with DIN 912/ISO 4762 for dimensional accuracy, thread profile, and head design. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for hazardous substance restrictions.