S-8077A329 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 chemical exposure
- Enhanced durability and wear resistance from the black oxide finish, providing long-lasting performance under demanding conditions
- Precise alignment and secure fit with Class 3A thread fit, ensuring reliable assembly and reduced vibration loosening
- High-strength performance offering 70,000 psi tensile and 35,000 psi shear strength for heavy-duty applications
- Non-slip installation and removal thanks to the knurled socket head and 1/4" hex drive, improving tool grip and efficiency
- Industry-standard compatibility meeting ASME B18.3 specifications for consistent quality and interchangeability
- Environmental and safety compliance with RoHS 3 and REACH regulations, ensuring safe use in regulated industries
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery and industrial equipment. The black oxide finish enhances corrosion resistance, making it suitable for applications exposed to moisture, chemicals, or outdoor conditions. Its UNC coarse thread and Class 3A thread fit provide superior holding power and vibration resistance, reducing maintenance needs in automated systems, conveyor assemblies, and rotating components. The knurled socket head with a 1/4" hex drive ensures secure tool engagement, minimizing slippage during high-torque installations. Ideal for use in manufacturing, automotive, and aerospace sectors, this shoulder screw delivers reliable performance where high tensile strength and dimensional accuracy are paramount.
Specification Summary & Compliance
This shoulder screw features a 3/8"-16 UNC thread with Class 3A fit for precise dimensional tolerance. It complies with ASME B18.3 manufacturing standards and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements, ensuring environmental safety and material compliance. The shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", guaranteeing consistent fit in precision assemblies.
