S-91255A271 10-32 x 7/8" 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 durability with 120,000 psi tensile strength and Rockwell C39 hardness, ensuring long-term reliability in demanding environments.
- Superior corrosion resistance from the black-oxide finish on alloy steel, protecting against rust and extending service life.
- Precise, secure fastening with Class 3A thread fit and UNF fine thread, minimizing the risk of loosening under vibration.
- Easy installation and removal thanks to the hex drive design, allowing for efficient tool engagement in confined spaces.
- Full thread coverage along the 7/8" length, providing consistent clamping force and versatility in various material thicknesses.
- Compliance with industry standards including ASME B18.3 and ASTM F835, ensuring consistent quality and interchangeability.
- Environmentally responsible construction that meets RoHS 3 and REACH regulations, supporting sustainable procurement goals.
Professional Applications & Engineering Value
This 10-32 UNF rounded head screw is engineered for precision applications where reliability is critical. The black-oxide alloy steel construction offers enhanced resistance to wear and environmental factors, making it ideal for automotive assemblies, machinery, and electronic enclosures. The fine thread and Class 3A fit provide superior holding power in materials prone to stress, reducing the need for frequent maintenance. Its button head style and hex drive facilitate quick installation in tight spaces, streamlining assembly processes while meeting strict industry specifications for high-performance industrial fasteners.
Specification Summary & Compliance
This screw features a 10-32 UNF thread with Class 3A tolerance for precise fit, fully threaded along a 7/8" length. It conforms to ASME B18.3 and ASTM F835 manufacturing standards, ensuring dimensional accuracy and performance. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and environmentally conscious usage.
