S-90279A191 8-32 x 5/16" ASME B18.6.3 Steel Round Head Phillips Screws
Steel Round Head Phillips 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 zinc-plated steel construction, extending service life in demanding industrial environments
- Exceptional tensile strength rated at 60,000 psi for reliable performance under heavy loads and vibration
- Optimized thread engagement with Class 2A fit and coarse UNC threading for faster installation and secure fastening
- Enhanced drive stability through Phillips No. 2 drive design, reducing cam-out and improving torque transmission
- Consistent dimensional accuracy maintained through ASME B18.6.3 compliance, ensuring perfect fit and interchangeability
- Full-threaded design providing maximum grip length and uniform stress distribution across the entire fastener
- Environmental compliance meeting RoHS 3 and REACH regulations for safe use in regulated industries
Professional Applications & Engineering Value
These 8-32 UNC zinc-plated steel rounded head screws deliver critical engineering advantages for industrial assembly applications where corrosion resistance and mechanical reliability are paramount. The combination of Rockwell B69 hardness and 60,000 psi tensile strength ensures these Phillips drive screws maintain structural integrity under sustained vibration and dynamic loading conditions. The coarse thread profile provides superior holding power in softer materials and allows for rapid installation in high-volume manufacturing environments. The rounded head design distributes clamping force evenly while presenting a finished appearance, making these fully threaded screws ideal for machinery assembly, electrical enclosures, and automotive components where both performance and aesthetics matter.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading (8-32 size) and 5/16" length. These screws conform to ASME B18.6.3 manufacturing specifications for dimensional accuracy and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring restricted substance compliance for global industrial applications.
