S-91205A722 1/2"-13 x 2 1/2" ASME B18.3, ASTM A574 Alloy Steel Thread-Locking Socket Head Screws
Alloy Steel Thread-Locking Socket Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional holding power with 170,000 psi tensile strength for reliable performance in demanding applications.
- Secure vibration resistance provided by the integrated nylon patch thread locker, maintaining clamp load from -70° to 250°F.
- Precise and durable fastening ensured by the Class 3A thread fit and Rockwell C37 hardness for reduced wear and long service life.
- Corrosion-resistant black-oxide finish on alloy steel for enhanced protection in harsh industrial environments.
- Easy installation and high torque capability with the standard hex socket and 3/8" drive, minimizing stripping and tool slip.
- Versatile coarse UNC threading allows for quick assembly and disassembly, ideal for heavy machinery and equipment.
- Trusted compliance and quality meeting ASME B18.3 and ASTM A574 standards, ensuring interchangeability and safety.
Professional Applications & Engineering Value
This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address critical challenges in industrial settings, such as vibration-induced loosening and corrosion. The nylon patch thread locker effectively secures joints in equipment exposed to dynamic loads, from -70° to 250°F, preventing downtime in automotive, aerospace, and heavy machinery applications. Its 1/2"-13 UNC coarse thread and Class 3A fit provide excellent engagement and durability, while the partially threaded design offers optimal clamping force. Made from high-strength alloy steel with a protective black-oxide coating, it resists rust and wear, extending service life in demanding environments and reducing maintenance costs for B2B buyers.
Specification Summary & Compliance
This screw features a 1/2"-13 UNC coarse thread with Class 3A precision fit for tight tolerances and reliable performance. It complies with ASME B18.3 and ASTM A574 specifications, ensuring consistent quality and dimensional accuracy. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible and safe industrial use.
