S-8077A568 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 environments and extended service life.
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high stress.
- Precise alignment and pivot function enabled by the 1" shoulder length with tight tolerances, reducing wear in assemblies.
- Secure, non-slip installation thanks to the knurled socket head and 3/16" hex drive, preventing tool slippage.
- Durable, wear-resistant surface from the black oxide finish, which also provides a sleek appearance and mild corrosion protection.
- High-accuracy threading with Class 3A fit and UNC coarse thread for easy assembly and strong, vibration-resistant connections.
- Broad regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards for safe, quality-assured use in various industries.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw with a black oxide finish is engineered to solve critical industrial challenges, such as misalignment and corrosion in machinery. The 1" shoulder length and precise diameter tolerances ensure accurate component positioning, reducing friction and wear in pivoting or rotating assemblies. Its UNC coarse threads and Class 3A fit provide quick, secure fastening, resisting loosening under vibration. The knurled socket head enhances grip during installation, minimizing stripping. Ideal for applications like conveyor systems, automotive fixtures, and precision instruments, this screw delivers reliable performance in demanding environments where corrosion resistance and dimensional stability are paramount.
Specification Summary & Compliance
This shoulder screw adheres to tight dimensional standards, including a Class 3A thread fit for high precision and a shoulder diameter tolerance of -0.004" to -0.002". It conforms to ASME B18.3 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental safety and material quality for industrial use.
