S-90187A119 M12 x 3 3/4" ISO 4017, DIN 933 Tight-Spot Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-term reliability in harsh industrial environments.
• High tensile strength of 110,000 PSI (Class 8.8) provides dependable load-bearing capacity for demanding applications.
• Secure locking mechanism with an expanding sleeve design prevents loosening under vibration and dynamic loads.
• Excellent shear strength of 69,600 PSI enhances joint integrity and safety in structural assemblies.
• Coarse metric thread (M12 x 1.75mm) with Class 6g fit allows for quick installation and reliable engagement in various materials.
• Rockwell C22 hardness ensures durability and resistance to wear, extending the fastener's service life.
• Full threading offers consistent clamping force along the entire length for uniform stress distribution.

Professional Applications & Engineering Value

This M12 hex head screw is engineered to address critical challenges in industrial fastening, such as vibration-induced loosening and corrosion. The zinc-plated steel material provides a protective barrier against moisture and chemicals, making it ideal for outdoor machinery, automotive assemblies, and construction equipment. With its expanding sleeve locking feature, it maintains clamp load in high-vibration environments, reducing maintenance needs. The coarse thread design ensures easy alignment and installation in thick materials (1 13/16"–2 3/4"), while the external hex drive allows for efficient torque application with standard tools. Compliant with ISO 4017/DIN 933 standards, it delivers consistent performance in heavy-duty applications, from structural steelwork to industrial manufacturing.

Specification Summary & Compliance

This fastener features M12 x 1.75mm coarse threads with a Class 6g thread fit for precise dimensional accuracy. It meets ISO 4017 (equivalent to DIN 933) manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions adherence. The Class 8.8 strength grade and full threading provide reliable mechanical properties for industrial use.