S-91255A199 8-32 x 1" ASTM F835 Steel Button Head Hex-Drive Screws
Steel Button Head Hex-Drive 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 black-oxide coating, extending service life in harsh industrial environments.
- Exceptional tensile strength (120,000 psi) and hardness (Rockwell C39) for reliable performance under high-stress applications.
- Precise Class 3A thread fit ensures tight, secure fastening with minimal risk of loosening or cross-threading.
- Fully threaded design provides maximum grip and load distribution along the entire screw length.
- Coarse UNC threading enables quick installation and removal, reducing assembly time and labor costs.
- Compact 3/32" hex drive allows for easy access in confined spaces with standard tools.
- Compliance with ASME B18.3 and ASTM F835 guarantees consistent quality and interchangeability in professional assemblies.
Professional Applications & Engineering Value
These 8-32 UNC Class 3A rounded head screws are engineered to address common industrial challenges, such as vibration-induced loosening and corrosion in demanding environments. The black-oxide alloy steel construction provides a durable, corrosion-resistant surface, ideal for machinery, automotive, and electronic enclosures where exposure to moisture or chemicals is a concern. The fully threaded coarse UNC design ensures rapid installation and superior holding power, reducing assembly time while maintaining high tensile strength for heavy-duty applications. With a rounded button head profile and compact hex drive, they offer a low-profile, secure fit in tight spaces, minimizing protrusion and enhancing safety. This combination of material robustness and precision threading delivers reliable performance in industrial fastening systems, supporting long-term operational efficiency.
Specification Summary & Compliance
This product features precise Class 3A thread fit with UNC coarse threading, ensuring dimensional accuracy per ASME B18.3 and ASTM F835 standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and material integrity for global supply chains.
