S-90292A138 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 and strength with 17-4 PH Stainless Steel construction, ideal for harsh industrial environments.
- Precise alignment and reduced assembly wear thanks to the Class 3A thread fit and standard shoulder fit, ensuring reliable performance.
- High load-bearing capability with 130,000 psi tensile strength and 65,000 psi minimum shear strength for demanding applications.
- Easy installation and removal using the hex drive and knurled head, providing a secure grip and reducing tool slippage.
- Durable and long-lasting performance supported by Rockwell C28 hardness and compliance with ASME B18.3 standards.
- Environmental and safety compliance with RoHS 3 and REACH regulations, ensuring safe use in various industries.
- Optimized for coarse thread applications with UNC threading, offering quick assembly and resistance to vibration loosening.
Professional Applications & Engineering Value
This 17-4 PH Stainless Steel shoulder screw is engineered to address common industrial challenges such as misalignment, corrosion, and high-stress failures. Its Class 3A thread fit and precise shoulder diameter ensure accurate positioning in machinery, reducing wear and extending component life. The coarse UNC thread and hex drive facilitate quick assembly in automated systems, while the high tensile and shear strength makes it suitable for heavy-duty applications like robotics, automotive assemblies, and aerospace components. By combining durability with regulatory compliance, this fastener minimizes downtime and maintenance costs in demanding environments.
Specification Summary & Compliance
This shoulder screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for tight tolerances and reliable performance. Key dimensions include a 5/16"-18 UNC coarse thread, 3/8" shoulder diameter with tight tolerances, and a 1/2" thread length. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental safety and suitability for global industrial use.
