S-91268A430 1/4"-20 x 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 load-bearing capacity with 150,000 psi tensile strength, ideal for high-stress structural and machinery applications.
- Superior wear and deformation resistance due to Rockwell C33 hardness, ensuring long-term reliability in harsh environments.
- Quick and secure installation with external hex drive and coarse UNC threads, reducing assembly time and preventing cross-threading.
- Consistent, precision fit with Class 2A thread tolerance, providing reliable engagement and vibration resistance.
- Full-length threading for maximum grip and adjustability across the entire 2" length, suitable for varied material thicknesses.
- Compliance with industry standards including ASME B18.2.1 and SAE J429, ensuring interoperability and safety in regulated sectors.
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements for hazardous substances.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, this Grade 8 hex head screw addresses critical challenges in heavy machinery, construction, and automotive assembly. The high-strength steel construction and fully threaded UNC coarse design provide superior clamping force and fatigue resistance, preventing joint failure under dynamic loads. Its external hex drive allows for high-torque application with standard tools, streamlining maintenance and reducing downtime. Ideal for securing structural components, engine parts, and equipment frames, this fastener ensures reliable performance in high-vibration environments where safety and durability are paramount.
Specification Summary & Compliance
This product meets Class 2A thread fit tolerances per UNC standards, ensuring precise engagement. Manufacturing adheres to ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and mechanical properties. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances for safe use in regulated markets.
