S-8077A331 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 extended service life.
- Exceptional mechanical strength offering a tensile strength of 70,000 psi and shear strength of 35,000 psi for reliable performance under heavy loads.
- Precise alignment and smooth rotation ensured by the Class 3A thread fit and standard shoulder fit, reducing assembly time and wear.
- Enhanced grip and easy handling provided by the knurled socket head, allowing for secure tool engagement and manual adjustments.
- Durable black oxide finish that adds an extra layer of corrosion protection and reduces galling during installation.
- Broad industrial compliance meeting ASME B18.3 standards and being RoHS 3 & REACH compliant for safe, global use.
- Optimized for high-stress applications with a coarse UNC thread and robust shoulder design, ensuring stability in dynamic assemblies.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery and heavy-duty equipment. The black oxide finish enhances corrosion resistance, making it suitable for environments exposed to moisture and chemicals, while the Class 3A thread fit and coarse UNC thread ensure tight tolerances and quick assembly in high-vibration settings. Commonly used in robotics, automotive assemblies, and conveyor systems, its knurled socket head allows for easy installation and maintenance, reducing downtime. The high tensile and shear strength provides reliable performance in applications requiring precise pivoting or rotational movement, offering long-term durability and cost savings by minimizing replacement needs.
Specification Summary & Compliance
This shoulder screw features a 3/8"-16 UNC thread with Class 3A thread fit for precise dimensional accuracy, along with a shoulder diameter of 1/2" and length of 3 3/4" within specified tolerances. It is manufactured in compliance with ASME B18.3 standards and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial markets.
