S-97832A357 1/2"-13 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
- Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and moisture-prone applications.
- Superior mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high-stress conditions.
- Precise alignment and secure positioning enabled by the standard shoulder fit and Class 3A thread for reduced assembly play and vibration resistance.
- Easy installation and removal with a 5/16" hex drive and knurled head, providing excellent grip and torque application without slippage.
- Durable and long-lasting performance backed by Rockwell B55 hardness, ensuring wear resistance and extended service life.
- Broad compatibility and standardization with UNC coarse thread and compliance to ASME B18.3, ensuring interchangeability and ease of sourcing.
- Environmentally compliant and safe meeting RoHS 3 and REACH standards, making it suitable for regulated industries and global supply chains.
Professional Applications & Engineering Value
This shoulder screw is engineered to address critical alignment and load-bearing challenges in industrial machinery, automation systems, and precision equipment. The 18-8 Stainless Steel material provides excellent corrosion resistance, reducing maintenance needs in humid or chemically aggressive settings. The 1/2"-13 UNC coarse thread and Class 3A fit ensure tight, secure fastening with minimal risk of loosening under vibration, while the standard shoulder acts as a precise pivot or spacer in assemblies. With a knurled head and 5/16" hex drive, it allows for quick, tool-friendly installation in confined spaces, enhancing assembly efficiency and reducing downtime in high-volume production environments.
Specification Summary & Compliance
The screw features a 1/2"-13 UNC coarse thread with Class 3A tolerance for precise fit, and a shoulder diameter of 5/8" with tight tolerances for accurate alignment. It is manufactured in accordance with ASME B18.3 specifications and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability for global industrial applications.
