S-8077A597 5/16"-18 ASME B18.3 Shoulder Screws
Shoulder 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 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure.
- Enhanced durability and reduced galling from the black oxide finish, providing a protective layer that extends service life.
- High-strength performance with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable load-bearing in demanding applications.
- Precise alignment and smooth rotation due to the standard shoulder fit and Class 3A thread fit, minimizing assembly play and vibration.
- Secure, non-slip installation with the knurled socket head and hex drive, allowing for high torque application without tool slippage.
- Wide compatibility and easy assembly from the UNC coarse threading, facilitating quick engagement and disassembly in various components.
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address common industrial challenges such as misalignment, corrosion, and mechanical failure. The black oxide finish not only enhances corrosion resistance but also reduces friction, making it ideal for high-motion assemblies in machinery, automotive, and aerospace sectors. The UNC coarse thread and Class 3A thread fit ensure quick, secure fastening with minimal risk of cross-threading, while the precise shoulder diameter and length provide stable pivoting and spacing in linkages, bearings, and rotating parts. By combining high tensile and shear strength with a knurled socket head for easy grip, this screw delivers reliable performance in heavy-duty applications, reducing maintenance downtime and improving operational efficiency.
Specification Summary & Compliance
This shoulder screw adheres to precise dimensional tolerances, including a Class 3A thread fit for tight fastening and standard shoulder dimensions with minimal variance. It conforms to ASME B18.3 specifications for consistent quality and performance. Additionally, it is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring it meets strict environmental and safety regulations for use in various industrial markets.
