S-90152A318 1/4"-20 x 5/16" ASME B18.3, ASTM F837 Stainless Steel Wire-Lockable Socket Head Screws
Stainless Steel Wire-Lockable 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 corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability
- Superior load-bearing capability from 80,000 psi tensile strength, ensuring secure fastening under high stress
- Precise thread engagement with Class 3A fit for reduced play and consistent clamping force in critical assemblies
- Enhanced torque transmission via the 3/16" hex drive and standard socket head, minimizing cam-out and tool wear
- Secure vibration resistance through wire locking design, maintaining joint integrity in dynamic applications
- Broad compatibility with UNC coarse threading and right-hand direction, simplifying installation and replacement
- Full regulatory compliance including RoHS 3 and REACH, supporting global supply chain and environmental standards
Professional Applications & Engineering Value
Engineered for demanding industrial settings, this socket head cap screw delivers reliable performance in machinery, automotive, and aerospace assemblies where vibration and corrosion are concerns. The 18-8 Stainless Steel material provides excellent resistance to rust and chemicals, reducing maintenance downtime. With a Class 3A thread fit and coarse UNC threading, it ensures quick installation and robust holding power in metals and composites. The hex drive design allows high torque application without slippage, while the fully threaded and wire-locking features prevent loosening under cyclic loads, making it a top choice for precision equipment and heavy-duty frameworks.
Specification Summary & Compliance
This fastener adheres to ASME B18.3 and ASTM F837 specifications, ensuring dimensional accuracy and manufacturing consistency. Threads are precision-cut to Class 3A tolerances with UNC coarse spacing and right-hand direction. The screw is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing safe use in regulated industries.
