S-92620A330 1 1/4"-7 x 5 1/2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws
High-Strength Grade 8 Steel Hex 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 strength and reliability with Grade 8 classification, supporting heavy-duty applications without failure.
- Superior corrosion resistance from zinc yellow-chromate plating, extending service life in harsh environments.
- High tensile strength of 150,000 psi ensures secure fastening under extreme loads and vibrations.
- Coarse UNC threading allows for quick assembly and reduced cross-threading risks in industrial settings.
- Partially threaded design provides optimal grip and clamping force where full threading isn't needed.
- External hex drive and hex head enable easy installation and removal with standard tools, boosting efficiency.
- Compliance with ASME B18.2.1 and SAE J429 standards guarantees consistent quality and interoperability.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered for demanding industrial applications, such as heavy machinery, construction equipment, and automotive assemblies, where high tensile strength and durability are critical. The zinc yellow-chromate plated steel construction offers excellent corrosion resistance, reducing maintenance costs and downtime in corrosive environments. With coarse UNC threading and a partially threaded shank, it ensures rapid installation and reliable clamping in materials prone to vibration loosening. The external hex drive design facilitates easy torque application, making it ideal for high-stress connections that require frequent disassembly. By meeting rigorous standards like ASME B18.2.1, it delivers consistent performance, enhancing safety and longevity in engineering projects.
Specification Summary & Compliance
This fastener adheres to precise dimensional tolerances, including a Class 2A thread fit for reliable engagement and UNC coarse thread specifications. It conforms to ASME B18.2.1 and SAE J429 manufacturing standards, ensuring uniformity and quality. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental safety and regulatory requirements in global markets.
