S-98164A532 5/16"-24 x 1 1/2" ASME B18.3, ASTM F879 Stainless Steel Button Head Hex-Drive Screws
Stainless Steel Button Head Hex-Drive 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 thanks to 316 stainless steel construction and passivated finish, ideal for harsh industrial environments
- Exceptional thread reliability with Class 3A fit and UNF fine threading, ensuring precise, vibration-resistant connections
- High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
- Secure and efficient installation enabled by the hex drive design, providing excellent torque transfer
- Full-length threading offers consistent engagement and maximum fastening versatility along the entire shank
- Compliant with major industry standards including ASME B18.3, RoHS 3, and REACH for guaranteed quality and safety
- Durable rounded button head provides a low-profile, finished appearance while reducing surface snagging
Professional Applications & Engineering Value
This 316 stainless steel rounded head screw is engineered to solve critical challenges in industrial settings where corrosion and mechanical stress are prevalent. The UNF fine thread and Class 3A thread fit deliver superior clamping force and vibration resistance, preventing loosening in machinery, automotive assemblies, and marine equipment. The passivated finish enhances the innate corrosion resistance of 316 stainless steel, making it suitable for chemical processing, food manufacturing, and outdoor applications. Combined with a hex drive for secure installation and full threading for adjustable grip, this screw ensures long-term reliability and reduces maintenance needs in high-performance engineering projects.
Specification Summary & Compliance
This screw features a 5/16"-24 UNF fine thread with Class 3A thread fit for high precision. It is manufactured in accordance with ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it meets stringent industry standards for safety and performance.
