S-91858A583 5/16"-18 x 1" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws
Stainless Steel Slotted Flat Head 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 with 316 stainless steel construction, ideal for harsh environments and chemical exposure
- Enhanced durability and strength featuring 70,000 psi tensile strength and Rockwell B80 hardness for reliable performance under stress
- Secure and precise fastening with Class 2A thread fit and UNC coarse threads ensuring easy installation and vibration resistance
- Optimized flush mounting thanks to the standard flat head design with 82° countersink angle for seamless surface integration
- Long-lasting surface protection through passivated finish, which increases corrosion resistance and extends service life
- Full thread engagement across the entire 1" length, providing maximum grip and load distribution in assemblies
- Compliance with industry standards including ASME B18.6.3, RoHS, and REACH, ensuring safety and environmental responsibility
Professional Applications & Engineering Value
These 316 stainless steel flat head screws are engineered to address critical challenges in industrial and marine settings where corrosion resistance and mechanical integrity are paramount. The passivated finish significantly enhances the material's natural ability to withstand corrosive agents, making these UNC coarse thread screws ideal for applications in chemical processing, offshore equipment, and food machinery. The fully threaded design and Class 2A thread fit ensure consistent clamping force and ease of assembly, reducing the risk of loosening under dynamic loads. With an 82° countersink angle, they provide a flush fit that minimizes protrusion, enhancing safety and aesthetics in finished products. These screws deliver reliable performance in demanding environments, supporting long-term operational efficiency and reducing maintenance costs.
Specification Summary & Compliance
This screw adheres to ASME B18.6.3 specifications, ensuring dimensional accuracy and interchangeability. The UNC coarse thread with Class 2A fit provides standard tolerance for reliable fastening. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its environmental safety and suitability for global markets.
