S-92620A326 1 1/4"-7 x 3 3/4" 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 load-bearing capability with 150,000 psi tensile strength, ideal for high-stress assemblies and heavy machinery.
- Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh industrial environments.
- Reliable fastening performance due to Grade 8 steel construction and Rockwell C33 hardness, minimizing wear and deformation.
- Easy installation and removal with an external hex drive and 1 7/8" head width, allowing for standard wrench use.
- Optimized thread engagement through 1 1/4"-7 UNC coarse spacing and Class 2A fit, reducing cross-threading risks.
- Versatile partial threading design for applications requiring both clamping and alignment flexibility.
- Compliance with major industry standards including ASME B18.2.1 and SAE J429, ensuring consistent quality and interchangeability.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered to address critical challenges in high-stress industrial applications, such as construction equipment, automotive frames, and heavy machinery assemblies. The zinc yellow-chromate plated finish offers robust protection against rust and chemical exposure, significantly enhancing durability in outdoor or corrosive settings. Made from high-strength steel with a Rockwell C33 hardness, it resists shear and tensile forces, preventing joint failure under dynamic loads. The 1 1/4"-7 UNC coarse thread and partially threaded shank provide secure clamping where vibration resistance is essential, while the external hex drive ensures straightforward installation with common tools, reducing assembly time and maintenance costs.
Specification Summary & Compliance
This fastener adheres to Class 2A thread fit tolerances and UNC coarse thread standards, ensuring precise dimensional accuracy. It meets ASME B18.2.1 and SAE J429 specifications for mechanical properties and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, guaranteeing safe and sustainable use.
