S-8077A359 8-32 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 environments and extended service life.
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under heavy loads.
- Precise Class 3A thread fit ensures secure, vibration-resistant fastening and easy assembly in demanding applications.
- Enhanced durability and wear resistance from the Black Oxide finish, providing added protection and a non-reflective surface.
- Secure and easy installation with a knurled socket head and 1/8" hex drive, allowing for high-torque application without slippage.
- Accurate shoulder positioning featuring a 1/4" diameter shoulder with tight tolerances for precise component alignment.
- Full regulatory compliance with ASME B18.3 standards, RoHS 3, and REACH, ensuring safety and environmental responsibility.
Professional Applications & Engineering Value
This 8-32 UNC thread shoulder screw is engineered to address critical challenges in industrial settings, such as misalignment and corrosion-induced failure. The 316 Stainless Steel material provides excellent resistance to chemicals and moisture, making it suitable for marine, chemical processing, and outdoor equipment. The Black Oxide finish enhances surface hardness and reduces galling, while the Class 3A thread fit and precise shoulder dimensions ensure stable assembly in machinery, pivots, and rotating assemblies. Its high tensile and shear strength supports heavy-duty applications, reducing maintenance needs and downtime in automation, aerospace, and transportation systems.
Specification Summary & Compliance
This shoulder screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for UNC 8-32 coarse threading. The shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", ensuring high dimensional accuracy. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material integrity for global industrial use.
