S-90910A821 8-32 x 1/4" ASME B18.3, ASTM F835 Steel Button Head Torx Plus Screws
Steel Button Head Torx Plus 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
- Exceptional corrosion resistance with zinc-plated alloy steel construction, extending service life in demanding environments.
- Superior torque transmission and reduced cam-out thanks to the Torx Plus IP15 drive, ensuring secure fastening and tool longevity.
- High-reliability thread engagement with a Class 3A thread fit, providing precise, vibration-resistant connections.
- Robust mechanical strength from 120,000 psi tensile strength and Rockwell C39 hardness, preventing shear and failure under high stress.
- Wide compatibility and easy installation with #8-32 UNC coarse threads and a fully threaded design for versatile use.
- Streamlined, low-profile head with a rounded button style, minimizing snagging and offering a clean finish.
- Guaranteed compliance and safety meeting ASME B18.3, ASTM F835, RoHS 3, and REACH standards for regulated industries.
Professional Applications & Engineering Value
These 8-32 UNC zinc-plated alloy steel rounded head screws are engineered to address critical challenges in industrial assembly, such as vibration loosening and corrosion-induced failure. The Torx Plus IP15 drive ensures maximum torque transfer with minimal slippage, which is vital for automated production lines and high-torque applications. The Class 3A thread fit and coarse UNC threading provide excellent grip in metals and plastics, reducing the risk of cross-threading and enhancing joint integrity. With a fully threaded design and zinc plating, these screws offer consistent clamping force and protection against harsh conditions, making them ideal for machinery, electronics enclosures, and automotive components where precision and long-term reliability are non-negotiable.
Specification Summary & Compliance
This product adheres to precise dimensional and performance criteria, including a Class 3A thread fit for tight tolerances per UNC standards, a 1/4" length, and a drive size of IP15 (T15). Manufacturing and material specifications conform to ASME B18.3 and ASTM F835. The screws are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring they are free of hazardous substances and suitable for global supply chains.
