S-90298A722 3/8"-16 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 with 18-8 Stainless Steel construction and passivated finish, ensuring longevity in harsh industrial environments.
- Exceptional precision alignment thanks to the 2-1/2" shoulder length with tight ±0.005" tolerance, minimizing component misalignment.
- High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness, providing reliable load-bearing capacity.
- Secure, non-slip installation enabled by the knurled head and 1/4" hex drive, allowing for high-torque application without tool slippage.
- Precise thread engagement with Class 3A UNC threads, ensuring consistent fit and reducing the risk of cross-threading in assembly.
- Broad regulatory compliance including RoHS 3 and REACH, making it suitable for global industrial and electronic applications.
- Durable, standardized design per ASME B18.3, guaranteeing interchangeability and reliability in precision machinery and fixtures.
Professional Applications & Engineering Value
This 18-8 Stainless Steel shoulder screw is engineered to address critical alignment and durability challenges in precision applications such as rotating assemblies, pivoting mechanisms, and industrial machinery. The 3/8"-16 UNC Class 3A thread and precisely machined shoulder with minimal diameter tolerance ensure accurate positioning and reduced wear on mating parts. The passivated finish enhances corrosion resistance, while the knurled head and hex drive facilitate secure installation in high-vibration environments. Ideal for use in robotics, conveyor systems, and automotive jigs, this screw provides reliable performance where exact shoulder length and thread fit are paramount for operational efficiency and reduced maintenance.
Specification Summary & Compliance
This shoulder screw adheres to ASME B18.3 specifications, with Class 3A thread fit for high precision and UNC coarse threading for quick assembly. Key dimensional tolerances include shoulder diameter held within -0.001" to 0.001" and shoulder length within -0.005" to 0.005". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use worldwide.
