S-90298A214 8-32 ASME B18.3 Shoulder Screws
Shoulder Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance thanks to 18-8 stainless steel construction and a passivated finish, ideal for harsh industrial environments.
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance in demanding applications.
- Precise alignment and smooth rotation enabled by the accurately machined 3/16" shoulder diameter with tight tolerances.
- High-reliability fastening from the Class 3A thread fit, ensuring secure connections and reducing the risk of loosening.
- Easy installation and removal with a standard hex socket head and 3/32" drive, compatible with common tools.
- Broad regulatory compliance including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental standards are met.
- Versatile coarse UNC threading (8-32) for quick assembly and robust holding power in various materials.
Professional Applications & Engineering Value
This 18-8 stainless steel shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. Its 3/16" shoulder diameter provides a stable bearing surface, minimizing misalignment and wear in rotating components like gears, pulleys, and linkages. The passivated finish enhances corrosion resistance, making it suitable for applications in moist or chemically aggressive environments, including food processing, automotive, and aerospace sectors. With a Class 3A thread fit and UNC coarse thread, it ensures rapid, secure fastening while the socket head design allows for compact installations in confined spaces. This screw’s high tensile strength and hardness support heavy-duty use, reducing maintenance needs and downtime in industrial machinery and equipment.
Specification Summary & Compliance
This shoulder screw features precise dimensional tolerances, including a shoulder diameter of 3/16" (tolerance: -0.001" to 0.001") and shoulder length of 1/2" (tolerance: -0.005" to 0.005"). It adheres to UNC thread standards with a Class 3A thread fit for superior accuracy. The product is manufactured in compliance with ASME B18.3 specifications and meets environmental regulations such as RoHS 3 (2015/863/EU) and REACH (EC 1907/2006).
