S-93705A587 5/16"-18 x 1 1/2" ASME B18.3 18-8 Stainless Steel Thread-Locking Socket Head Screws
18-8 Stainless Steel Thread-Locking 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
- Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability.
- High tensile strength of 70,000 psi ensures dependable performance under heavy loads and mechanical stress.
- Secure vibration-resistant locking provided by the Nylon Patch, maintaining clamp load from -70° to 250°F without loosening.
- Precise Class 3A thread fit for accurate engagement and reduced risk of cross-threading during assembly.
- Partially threaded design allows for controlled clamping force and easier alignment in precise applications.
- 1/4" hex drive socket head enables high-torque installation with standard tools, minimizing stripping and improving efficiency.
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees quality, safety, and environmental standards for global industrial use.
Professional Applications & Engineering Value
This 5/16"-18 UNC Socket Head Cap Screw is engineered to address critical challenges in industrial assembly, such as vibration-induced loosening and corrosion in demanding conditions. The 18-8 Stainless Steel material offers excellent resistance to rust and chemical exposure, making it suitable for machinery, automotive, and outdoor equipment. The Nylon Patch thread locker ensures reliable fastening without the need for additional adhesives, maintaining integrity across a wide temperature range. With a coarse thread spacing and Class 3A thread fit, it provides quick installation and secure holding power, reducing downtime in high-volume production lines. Ideal for applications requiring partially threaded designs, this screw delivers consistent performance in precision engineering and heavy-duty frameworks.
Specification Summary & Compliance
This screw features a 5/16"-18 UNC thread with Class 3A precision fit and coarse thread spacing for robust engagement. It adheres to ASME B18.3 manufacturing standards, ensuring dimensional accuracy and reliability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety requirements for industrial use.
