S-90909A532 5/16"-18 x 3/4" Stainless Steel Flanged Button Head Hex-Drive Screws
Stainless Steel Flanged 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 with 316 Stainless Steel and passivated finish, ideal for harsh environments and extended service life.
- High-strength performance offering 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing in demanding applications.
- Precise, secure fastening ensured by Class 3A thread fit and UNC coarse threading, reducing the risk of cross-threading and loosening.
- Efficient installation and removal with a 3/16" hex drive, providing excellent torque transfer and ease of use in confined spaces.
- Enhanced stability and load distribution from the integrated flange and wide rounded button head, minimizing surface damage and pull-through.
- Full threading along the 3/4" length allows for maximum grip and adjustability in various material thicknesses.
- Compliance with environmental standards including RoHS 3 and REACH, ensuring safety and regulatory acceptance for global industrial use.
Professional Applications & Engineering Value
This 316 Stainless Steel flanged rounded head screw is engineered to address critical challenges in industrial settings, such as exposure to corrosive chemicals, moisture, and high-stress conditions. The passivated finish enhances the innate corrosion resistance of 316 stainless steel, making it a top choice for marine, chemical processing, and food industry applications where durability is paramount. Its UNC coarse thread and Class 3A fit provide superior holding power and vibration resistance, reducing maintenance needs in machinery and structural assemblies. The hex drive and flanged design simplify installation while distributing clamp load effectively, preventing surface damage and ensuring long-term reliability in fastening solutions.
Specification Summary & Compliance
This screw adheres to UNC thread standards with a Class 3A fit for high precision, featuring a 5/16"-18 thread size, coarse spacing, and right-hand direction. Dimensions include a 3/4" length, 0.688" flange diameter, and full threading. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety requirements for industrial use.
