S-8077A296 3/8"-16 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 chemical exposure
- Enhanced durability and reduced galling thanks to the black oxide finish that provides added surface protection
- Precise alignment and smooth rotation with a Class 3A thread fit ensuring tight tolerances and reliable assembly
- High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for demanding load applications
- Secure and non-slip installation with a knurled socket head and 1/4" hex drive for easy torque application
- Accurate shoulder positioning with controlled diameter and length tolerances for consistent component spacing
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH for safe, regulated use
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and industrial equipment. The black oxide finish not only enhances corrosion resistance but also minimizes friction and wear in high-movement assemblies. With a 3/8"-16 UNC coarse thread and Class 3A fit, it ensures rapid installation and reliable clamping force, reducing the risk of loosening under vibration. The precisely machined shoulder provides stable bearing surfaces for rotating parts like gears and pulleys, eliminating misalignment and extending component life. Ideal for applications in manufacturing, automotive, and marine environments, this fastener delivers consistent performance where high tensile strength and corrosion resistance are paramount.
Specification Summary & Compliance
This shoulder screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for precise engagement. Key dimensional tolerances include shoulder diameter (-0.004" to -0.002") and length (-0.005" to 0.005"), ensuring accurate fits in assemblies. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material restrictions are met for industrial use.
