S-8077A769 1/2"-13 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 and Black Oxide finish, ideal for harsh industrial environments.
- Enhanced durability and load capacity from 70,000 psi tensile strength and 35,000 psi shear strength, ensuring reliable performance under stress.
- Precise alignment and smooth rotation thanks to the knurled head and standard shoulder fit, reducing assembly time and wear.
- High thread reliability with Class 3A fit and coarse UNC threads, providing secure fastening and vibration resistance.
- Easy installation and removal using a standard hex drive (5/16"), compatible with common tools for efficient maintenance.
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence.
- Optimized for heavy-duty applications with Rockwell B79 hardness and precise shoulder dimensions, minimizing failure risks.
Professional Applications & Engineering Value
This shoulder screw is engineered to address common industrial challenges, such as misalignment and corrosion in machinery. The 316 Stainless Steel material, combined with a Black Oxide finish, offers exceptional resistance to rust and chemicals, making it suitable for marine, chemical processing, and outdoor equipment. The UNC coarse threads and Class 3A thread fit ensure quick assembly and high vibration resistance, while the knurled head improves grip during manual adjustments. With a robust shoulder diameter and length, it provides stable pivoting and spacing in precision assemblies, reducing wear and maintenance costs in industrial fastening systems.
Specification Summary & Compliance
This shoulder screw features precise dimensions, including a thread size of 1/2"-13 UNC with Class 3A fit, shoulder diameter tolerance of -0.004" to -0.002", and shoulder length tolerance of -0.005" to 0.005". It meets ASME B18.3 specifications for dimensional accuracy and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity.
