S-91251A482 12-24 x 2 1/2" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket Head 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 170,000 PSI ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
- Superior corrosion resistance from the black-oxide finish on alloy steel extends service life in harsh industrial environments.
- Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies in critical applications.
- High hardness rating (Rockwell C37) offers excellent wear resistance, maintaining thread integrity through repeated use.
- Standard hex drive (5/32") design allows for easy installation and removal with common tools, improving assembly efficiency.
- Fully threaded construction ensures consistent clamping force along the entire 2 1/2" length for uniform load distribution.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety for global supply chain requirements.
Professional Applications & Engineering Value
This black-oxide alloy steel socket head cap screw is engineered to address common industrial challenges such as vibration loosening and environmental degradation. The 12-24 UNC coarse thread with Class 3A fit provides superior grip in materials like cast iron and aluminum, minimizing thread stripping in high-torque applications. The corrosion-resistant black-oxide surface treatment protects against moisture and chemicals, making it ideal for machinery, automotive assemblies, and outdoor equipment. Its 170,000 PSI tensile strength and fully threaded design ensure reliable performance in dynamic loads, reducing maintenance needs and downtime in production environments.
Specification Summary & Compliance
This fastener features a 12-24 UNC coarse thread with Class 3A precision tolerance for secure fitment. Manufacturing adheres to ASTM A574 specifications for consistent quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets international environmental and safety standards for industrial use.
