S-90346A128 1/4"-20 x 7/8" ASME B18.3 High-Strength 316 Stainless Steel Socket Head Screws
High-Strength 316 Stainless Steel 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 in harsh environments thanks to 316 stainless steel construction, ideal for chemical, marine, and outdoor applications.
- High tensile strength of 110,000 psi ensures reliable performance under heavy loads and vibration, reducing the risk of fastener failure.
- Precise Class 3A thread fit provides excellent engagement and clamping force, minimizing loosening in critical assemblies.
- Cold-worked fabrication enhances material hardness (Rockwell C25) and durability for long service life in demanding conditions.
- Hex socket drive (3/16") allows for high-torque installation and removal in confined spaces, improving assembly efficiency.
- Full threading and coarse UNC thread enables faster installation and superior holding power across the entire 7/8" length.
- Compliance with ASME B18.3, RoHS 3, and REACH ensures consistent quality and environmental safety for global industrial use.
Professional Applications & Engineering Value
This 316 stainless steel socket head cap screw is engineered to solve critical challenges in industrial settings where corrosion resistance and high strength are non-negotiable. The cold-worked manufacturing process enhances the fastener's structural integrity, making it suitable for applications exposed to moisture, chemicals, and high stress, such as in marine equipment, chemical processing plants, and food machinery. The Class 3A UNC coarse thread ensures a secure, vibration-resistant fit, reducing maintenance needs in dynamic assemblies. With its hex socket drive, it facilitates easy installation in tight spaces, streamlining production and maintenance workflows while delivering reliable performance in demanding environments.
Specification Summary & Compliance
This socket head cap screw features a 1/4"-20 UNC coarse thread with a Class 3A thread fit for precise dimensional accuracy. It is manufactured in accordance with ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safety and consistency for industrial use.
