S-91255A234 10-24 x 5/16" 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
- Exceptional tensile strength of 120,000 psi ensures reliable performance in high-stress industrial applications.
- Corrosion-resistant black-oxide coating extends service life by protecting against rust and environmental damage.
- Precision Class 3A thread fit guarantees secure, vibration-resistant connections with minimal risk of loosening.
- High Rockwell C39 hardness provides superior wear resistance and durability under repetitive use.
- Convenient 1/8" hex drive allows for easy installation and removal with standard tools, reducing assembly time.
- Fully threaded design offers maximum grip and holding power along the entire screw length.
- Compliance with ASME B18.3 and ASTM F835 ensures consistent quality and interchangeability in regulated environments.
Professional Applications & Engineering Value
These 10-24 UNC Class 3A black-oxide alloy steel rounded head screws are engineered to address common industrial challenges such as vibration-induced loosening and corrosion in demanding environments. The coarse UNC thread and Class 3A fit provide excellent engagement in a variety of materials, reducing the risk of cross-threading and ensuring reliable fastening in machinery, automotive assemblies, and electronic enclosures. The black-oxide surface treatment not only enhances corrosion resistance but also minimizes galling, making these fully threaded screws ideal for applications requiring repeated disassembly. With a rounded button head profile and 1/8" hex drive, they offer a low-profile, aesthetically pleasing finish while enabling quick installation with standard hex keys, streamlining maintenance and reducing downtime in production lines.
Specification Summary & Compliance
This product adheres to precise dimensional standards, including 10-24 UNC coarse thread with Class 3A tolerance for superior thread engagement and fit. Manufacturing and material specifications comply with ASME B18.3 and ASTM F835, ensuring consistent performance. Additionally, these screws are RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for use in global markets.
