S-91255A824 1/2"-20 x 2" 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 applications, reducing the risk of fastener failure.
- Class 3A fine threading provides superior fit and vibration resistance, maintaining secure connections in demanding environments.
- Black-oxide coating on alloy steel offers enhanced corrosion resistance and durability, extending service life in industrial settings.
- Fully threaded design allows for maximum grip and load distribution along the entire length, improving joint integrity.
- Hex drive and rounded button head facilitate easy installation and a low-profile finish, minimizing protrusion and snag hazards.
- Compliance with ASME B18.3 and ASTM F835 guarantees consistent quality and interchangeability, streamlining procurement and assembly processes.
- RoHS 3 and REACH compliance ensures environmental and safety standards are met, supporting sustainable and regulated operations.
Professional Applications & Engineering Value
This 1/2"-20 UNF screw with a black-oxide alloy steel construction is engineered to address common industrial challenges, such as vibration loosening and corrosion in harsh environments. The fine thread and Class 3A fit provide precise engagement, reducing the need for frequent retightening in machinery, automotive, and heavy equipment applications. Its rounded head and hex drive enable quick, tool-friendly installation while maintaining a sleek profile to prevent interference. With a Rockwell C39 hardness and high tensile strength, it delivers long-term reliability in structural assemblies, ensuring minimal downtime and maintenance costs for B2B clients.
Specification Summary & Compliance
This product adheres to Class 3A thread fit and UNF fine threading standards, ensuring dimensional accuracy and compatibility. It meets ASME B18.3 and ASTM F835 specifications for consistent manufacturing quality. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental and safety requirements in industrial use.
