S-90298A839 5/8"-11 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 and passivated finish, ideal for harsh industrial environments
- Exceptional load-bearing capacity with 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-term performance
- Precision alignment and reduced wear thanks to the 3/4" shoulder diameter with tight ±0.001" tolerance
- Secure installation and removal using the 3/8" hex drive and knurled head for enhanced grip
- Consistent thread engagement with Class 3A fit and coarse 5/8"-11 UNC threads for quick assembly
- Broad regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards for global use
- Versatile right-hand threading suitable for standard machinery and equipment applications
Professional Applications & Engineering Value
This 18-8 Stainless Steel shoulder screw is engineered to address critical challenges in precision machinery, such as misalignment and component wear. The passivated finish enhances corrosion resistance, making it suitable for demanding environments like automotive assemblies, industrial robots, and food processing equipment. Its 3/4" shoulder diameter with tight tolerance control ensures accurate pivoting and spacing, reducing stress on adjacent parts. The Class 3A thread fit and coarse UNC threading facilitate rapid, secure fastening in high-vibration settings, while the knurled head and hex drive allow for easy handling with standard tools. Ideal for applications requiring robust, RoHS and REACH compliant fasteners, this screw delivers reliable performance in heavy-duty industrial systems.
Specification Summary & Compliance
This shoulder screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for precise engagement and a shoulder diameter tolerance of -0.001" to 0.001". It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental safety. Manufactured from 18-8 Stainless Steel with a passivated finish, it maintains consistent performance under loads up to 70,000 psi tensile strength and Rockwell B55 hardness.
