S-90585A134 8-32 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 316 stainless steel construction, ideal for harsh environments and chemical exposure
- Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-term fastening
- Precision Class 3A thread fit ensures tight, secure engagement and reduces the risk of loosening under vibration
- Optimized for flush mounting with an 82° countersink angle and standard flat head profile for smooth, unobtrusive surfaces
- Easy installation and removal using a 3/32" hex drive, providing superior torque transmission and reduced tool slippage
- Full threading for maximum grip along the entire 9/16" length, enhancing load distribution in various materials
- Enhanced durability and longevity with a passivated finish that increases surface hardness and corrosion protection
Professional Applications & Engineering Value
This 8-32 UNC flat head screw in 316 stainless steel is engineered to solve critical fastening challenges in demanding industrial settings. Its coarse threading and Class 3A thread fit provide excellent holding power in soft materials and resistance to vibrational loosening, making it ideal for machinery, marine equipment, and chemical processing applications. The passivated finish significantly boosts corrosion resistance, extending service life in humid or corrosive environments. With a 9/16" length and hex drive, it ensures quick, secure installation in tight spaces, reducing assembly time and maintenance costs while maintaining structural integrity under high-stress conditions.
Specification Summary & Compliance
This screw adheres to precise dimensional standards, including a Class 3A thread fit for superior tolerance control and UNC coarse threading for efficient engagement. It meets ASME B18.3 and ASTM F879 specifications, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and regulatory adherence for global industrial use.
