S-90585A225 8-32 x 5/16" ASME B18.3 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 and passivated finish, ideal for harsh environments and extended service life
- Exceptional mechanical strength delivering 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under high stress
- Precision thread engagement with Class 3A fit and UNC coarse threads ensuring secure fastening and vibration resistance
- Optimized drive efficiency featuring a 3/32" hex drive for high torque application and reduced cam-out risk
- Flush mounting capability with standard 82° flat head profile for smooth surface finishes in assembled products
- Full thread coverage along the 5/16" length providing maximum grip and load distribution
- Regulatory compliance assurance meeting ASME B18.3 specifications and environmental standards (RoHS 3 & REACH)
Professional Applications & Engineering Value
These 8-32 UNC flat head screws in 316 stainless steel address critical challenges in industrial applications where corrosion resistance and mechanical reliability are paramount. The passivated finish enhances surface durability against chemical exposure and oxidation, making these hex drive screws ideal for marine, chemical processing, and food equipment applications. The Class 3A thread fit and coarse threading provide superior vibration resistance in high-stress assemblies, while the flat head design ensures flush mounting for safety and aesthetics. Engineered to ASME B18.3 standards, these fully threaded fasteners deliver consistent performance in precision machinery, electronic enclosures, and structural components where failure is not an option.
Specification Summary & Compliance
Manufactured to exacting ASME B18.3 specifications with Class 3A thread fit tolerances and UNC coarse thread profile. The screws feature precise dimensional control with head diameter tolerance of -0.048" to 0" and standardized 82° countersink angle. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures safe use across global markets.
