S-92210A175 5/16"-18 x 9/16" ASME B18.3, ASTM F879 Stainless Steel Hex Drive Flat Head Screws
Stainless Steel Hex Drive 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 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-term performance
- Precise, secure fastening ensured by Class 3A thread fit and UNC coarse threading, reducing the risk of cross-threading
- Efficient installation and flush mounting with a standard 82° countersink angle and hex drive for easy torque application
- Full thread engagement along the entire 9/16" length provides maximum grip and load distribution
- Compliance with major industry standards including ASME B18.3, ensuring consistent quality and interchangeability
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements
Professional Applications & Engineering Value
These 18-8 stainless steel flat head screws are engineered to address critical challenges in industrial assembly, such as vibration resistance, corrosion in exposed or high-moisture settings, and the need for reliable, flush-surface fastening. The hex drive and coarse UNC threading facilitate quick installation in metals and plastics, while the Class 3A thread fit minimizes backlash and improves joint integrity. The passivated finish enhances the natural corrosion resistance of stainless steel, making these screws suitable for machinery, automotive components, and outdoor equipment where durability and regulatory compliance are paramount.
Specification Summary & Compliance
This screw features a 5/16"-18 UNC thread with Class 3A precision tolerance, ensuring tight fit and interchangeability. 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 standards, confirming its suitability for global industrial supply chains.
