S-91255A263 10-32 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 tensile strength of 120,000 psi ensures reliable performance under high-stress applications without failure.
- Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies in critical machinery.
- Fine UNF threading offers enhanced grip and load distribution, ideal for fine-adjustment components.
- Fully threaded design allows for maximum engagement and holding power across the entire fastener length.
- Hardened Rockwell C39 material delivers excellent wear resistance and durability for repeated use.
- Compact 1/8" hex drive and rounded button head enables easy installation in confined spaces with a low-profile finish.
Professional Applications & Engineering Value
This 10-32 UNF Class 3A Black-Oxide Alloy Steel Rounded Head Screw is engineered to address common industrial challenges such as vibration loosening and corrosion in harsh conditions. The fine thread spacing and Class 3A fit ensure minimal backlash and secure fastening in precision equipment like automotive assemblies, electronic enclosures, and machinery frames. The Black-Oxide surface treatment on alloy steel provides a protective layer that reduces oxidation, while the fully threaded right-hand design allows for uniform stress distribution. With a high tensile strength of 120,000 psi, it supports heavy-duty applications, reducing maintenance needs and enhancing operational reliability in sectors requiring RoHS and REACH compliance.
Specification Summary & Compliance
This screw adheres to Class 3A thread fit per UNF standards, ensuring precise dimensional accuracy. It meets ASME B18.3 and ASTM F835 specifications for consistent manufacturing quality. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it is free of hazardous substances, making it suitable for global industrial use. The fully threaded design with fine spacing and right-hand orientation supports reliable performance in regulated environments.
