S-8077A286 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 and Black Oxide finish, ideal for harsh industrial environments
- Enhanced load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
- Precise alignment and spacing ensured by the 1/2" shoulder diameter with tight tolerance control
- Secure installation and removal using the hex drive socket head with knurled texture for improved grip
- Reliable thread engagement with Class 3A fit and UNC coarse threads for vibration resistance
- Extended service life backed by Rockwell B79 hardness and compliance with ASME B18.3 standards
- Environmental and safety compliance meeting RoHS 3 and REACH regulations for global industrial use
Professional Applications & Engineering Value
This 3/8"-16 UNC shoulder screw delivers exceptional engineering value in applications requiring precise component positioning and rotational control. The 316 Stainless Steel material combined with Black Oxide finish provides superior resistance to corrosion, chemicals, and high-moisture environments, making it ideal for machinery, automotive assemblies, and marine equipment. The 5" shoulder length with controlled tolerances ensures accurate alignment of moving parts, reducing wear and maintenance costs. The socket head with hex drive allows for easy installation in confined spaces, while the Class 3A thread fit maintains secure fastening under dynamic loads. These features solve common industrial challenges like misalignment, corrosion-induced failure, and assembly inefficiency, offering long-term reliability in precision engineering applications.
Specification Summary & Compliance
This shoulder screw features a 3/8"-16 UNC thread with Class 3A fit for high-precision applications. The shoulder diameter is 1/2" with a tolerance of -0.004" to -0.002", and the shoulder length is 5" with a tolerance of -0.005" to 0.005". Manufactured in compliance with ASME B18.3 specifications, it also meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safety and regulatory adherence for industrial use.
