S-90340A117 1/4"-20 x 1 1/2" Socket Head Screws for Square-Drive Wrenches

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 18-8 stainless steel construction, ideal for harsh or humid industrial environments.
• Superior load-bearing capacity with a high 70,000 psi tensile strength for demanding mechanical applications.
• Precise and secure fastening ensured by the Class 3A thread fit, minimizing the risk of loosening under vibration.
• High-torque installation capability with the square drive and high-profile socket head, allowing for a secure tool grip.
• Reliable performance in automated assembly due to the consistent 1/4"-20 UNC coarse threads and partial threading for controlled engagement.
• Enhanced durability and wear resistance provided by the Rockwell B84 hardness, extending the screw's service life.
• Compliance with global environmental standards (RoHS 3 & REACH), making it suitable for regulated industries and international supply chains.

Professional Applications & Engineering Value

This 18-8 stainless steel socket head cap screw is engineered to solve critical fastening challenges in high-stress and corrosive environments. Its 1/4"-20 UNC coarse thread and Class 3A fit provide exceptional vibration resistance and clamping force, preventing joint failure in machinery, automotive assemblies, and heavy equipment. The high-strength material and Rockwell B84 hardness ensure it withstands significant tensile and shear loads without deforming. The square drive and high-profile socket head allow for efficient installation with standard tools, reducing assembly time. Ideal for applications requiring reliable, partially threaded fasteners that maintain integrity under dynamic loads and exposure to moisture or chemicals.

Specification Summary & Compliance

This socket head cap screw adheres to UNC coarse thread standards with a precise Class 3A thread fit for tight tolerances. Manufactured to inch system specifications, it features a 1/4"-20 thread size, 1-1/2" length, and partial threading from a minimum thread length of 1". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict environmental and safety standards for industrial use.