S-8077A332 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 chemical exposure
- Enhanced durability and wear resistance from the black oxide finish, providing long-lasting performance
- Precise alignment and smooth rotation with a 1" shoulder length and standard shoulder fit, reducing component wear
- High-strength fastening offering 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
- Secure, non-slip installation using a 1/4" hex drive and knurled head for improved grip during tightening
- Reliable thread engagement with Class 3A thread fit and coarse 5/16"-18 UNC threads for quick assembly and vibration resistance
- Compliance with industry standards including ASME B18.3, ensuring consistent quality and interchangeability
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw with black oxide finish is engineered to address critical industrial challenges, such as misalignment and corrosion in machinery. The 1" shoulder length provides a precise bearing surface for rotating components like gears and pulleys, minimizing friction and extending equipment life. Its Class 3A thread fit and coarse UNC threads ensure quick, secure fastening in high-vibration environments, from automotive assemblies to conveyor systems. The knurled head and hex drive facilitate easy installation, even in tight spaces, while the material's inherent strength supports heavy loads without failure. Ideal for precision industrial fastening, it offers a reliable solution for maintaining operational integrity in demanding settings.
Specification Summary & Compliance
This shoulder screw features a 5/16"-18 UNC thread with Class 3A thread fit for precise dimensional accuracy. It adheres to ASME B18.3 manufacturing standards, with shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial applications.
