S-91268A123 1/4"-20 x 2 1/2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws
High-Strength Grade 8 Steel Hex 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 tensile strength of 150,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Grade 8 steel construction with Rockwell C33 hardness provides superior durability and resistance to wear, extending service life in demanding environments.
- UNC coarse threading offers quick assembly and superior grip in a variety of materials, improving installation efficiency.
- Partially threaded design allows for precise clamping force control, minimizing material damage and ensuring secure joints.
- Class 2A thread fit guarantees consistent, easy installation with standard nuts and tapped holes, reducing assembly time and errors.
- External hex drive enables high-torque application with common tools, facilitating quick and secure fastening in tight spaces.
- Compliance with ASME B18.2.1 and SAE J429 standards ensures interchangeability and reliability, meeting rigorous industrial specifications.
Professional Applications & Engineering Value
Engineered for heavy-duty industrial use, this Grade 8 hex head screw delivers unmatched reliability in applications such as machinery assembly, structural frameworks, and automotive components. The steel material and Rockwell C33 hardness provide excellent resistance to shear and vibration, addressing common failure points in dynamic environments. With its 1/4"-20 UNC coarse thread and partial threading, it ensures rapid installation and secure fastening without stripping, while the external hex drive allows for high torque application, making it ideal for maintenance and construction projects where strength and efficiency are critical.
Specification Summary & Compliance
This screw features precise Class 2A thread fit and adheres to ASME B18.2.1 and SAE J429 standards for dimensional accuracy and performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial markets.
