S-8077A616 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.
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable, high-load applications.
- Precise, secure fit with Class 3A thread tolerance, ensuring minimal backlash and vibration resistance.
- Enhanced durability and wear resistance from the Black Oxide finish, providing added protection against abrasion.
- Easy installation and removal with a knurled socket head and hex drive, allowing for high-torque application without slippage.
- Accurate alignment and spacing due to the standardized shoulder diameter and length, critical for precision assemblies.
- Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence.
Professional Applications & Engineering Value
This 316 Stainless Steel shoulder screw with a Black Oxide finish is engineered to address common industrial challenges such as corrosion, misalignment, and mechanical failure. The UNC coarse threading and Class 3A thread fit provide a tight, reliable connection that resists loosening under vibration, making it ideal for machinery, automotive, and aerospace components. The knurled socket head with a hex drive ensures easy handling in confined spaces, while the precise shoulder diameter and length facilitate accurate positioning in assemblies like bearings and pulleys. Its high tensile and shear strength ensures longevity in demanding applications, reducing downtime and maintenance costs.
Specification Summary & Compliance
This shoulder screw features a 5/16"-18 UNC thread with Class 3A precision fit, ensuring tight tolerances for reliable performance. Key dimensions include a shoulder diameter of 3/8" with tight tolerances and a thread length of 1/2". It meets ASME B18.3 manufacturing standards and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material integrity for industrial use.
