S-8077A784 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 industrial environments and outdoor applications.
- Enhanced durability and wear resistance from the black oxide finish, which also provides a sleek, non-reflective surface.
- High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength, ensuring reliable operation under heavy loads.
- Precise and secure fastening thanks to the Class 3A thread fit and UNC coarse threads, which resist loosening in high-vibration settings.
- Easy installation and removal with a 5/16" hex drive and knurled head, offering excellent grip and torque application.
- Accurate alignment and spacing provided by the standard shoulder fit, critical for machinery and assembly applications.
- Full regulatory compliance with ASME B18.3, RoHS 3, and REACH standards, 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 stress. The black oxide finish not only enhances corrosion resistance but also reduces galling, making it suitable for high-motion assemblies in manufacturing equipment, automotive systems, and marine hardware. The UNC coarse thread design ensures quick assembly and superior holding power in materials like metals and plastics, while the precision shoulder maintains exact part spacing, reducing wear and extending service life. Its high tensile and shear strength makes it a reliable choice for demanding applications, from heavy machinery to precision instruments, where failure is not an option.
Specification Summary & Compliance
This shoulder screw features a 3/8"-16 UNC thread with Class 3A fit for tight tolerances and reliable engagement. Dimensions include a shoulder diameter of 5/8" and length of 1 1/4", with precise tolerances to ensure consistent performance. 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 it is free from hazardous substances and safe for various industrial uses.
