S-91255A208 8-36 x 3/8" 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 corrosion resistance with Black-Oxide coating, extending service life in demanding industrial environments.
- Superior holding power from the fully threaded design and Class 3A fit, ensuring reliable, vibration-resistant assemblies.
- High tensile strength of 120,000 psi and Rockwell C39 hardness for dependable performance under heavy loads.
- Precise, fine UNF threads provide excellent engagement and reduce the risk of stripping in critical applications.
- Easy installation and removal with the 3/32" hex drive, compatible with standard tools for efficient maintenance.
- Low-profile rounded button head offers a finished appearance and reduces snagging in tight spaces.
- Compliance with major industry standards including ASME B18.3 and ASTM F835, ensuring consistent quality and reliability.
Professional Applications & Engineering Value
Engineered for precision and durability, these 8-36 UNF Class 3A Black-Oxide Alloy Steel Rounded Head Screws are ideal for high-stress applications in machinery, automotive, and electronics assembly. The fine thread and Class 3A fit deliver superior clamp load and vibration resistance, preventing loosening in dynamic environments. The Black-Oxide finish on alloy steel provides excellent corrosion protection, extending component life even in humid or chemically exposed settings. With a fully threaded design and 3/32" hex drive, they ensure quick, secure fastening in confined spaces, reducing installation time and improving overall assembly integrity for industrial professionals.
Specification Summary & Compliance
This screw meets precise dimensional standards with UNF fine threads and a Class 3A thread fit for high accuracy. It conforms to ASME B18.3 and ASTM F835 specifications, ensuring consistent manufacturing quality. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for global industrial use.
