S-8077A358 8-32 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 environments
- High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for reliable load-bearing applications
- Precise thread engagement with Class 3A fit and UNC coarse threads ensuring vibration resistance and easy assembly
- Secure installation and removal via hex socket drive and knurled head for enhanced grip and torque application
- Accurate shoulder positioning with tight diameter and length tolerances for consistent component alignment
- Long-term durability 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 316 Stainless Steel shoulder screw with Black Oxide finish is engineered to address critical challenges in industrial assembly, such as corrosion in chemical or marine settings and misalignment in rotating machinery. The UNC coarse threads and Class 3A thread fit provide superior resistance to loosening under vibration, while the knurled socket head allows for secure tool engagement in confined spaces. Its precision-machined shoulder ensures accurate shaft positioning in applications like bearings, pulleys, and linkages, reducing wear and maintenance costs. Ideal for high-tensile industrial applications, this screw delivers reliable performance in equipment requiring repeated disassembly and exposure to corrosive elements.
Specification Summary & Compliance
This shoulder screw features an 8-32 UNC thread with Class 3A fit and a shoulder diameter tolerance of -0.004" to -0.002" for precise alignment. Manufactured in accordance with ASME B18.3 specifications, it ensures dimensional consistency and mechanical reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable use in global markets.
