S-91268A270 3/8"-16 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
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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 for high-stress industrial applications
- Superior wear resistance due to Rockwell C33 hardness, extending service life in demanding environments
- Reliable fastening performance with Class 2A thread fit ensuring consistent engagement and vibration resistance
- Quick installation efficiency through UNC coarse threading and external hex drive design
- Full-length thread coverage providing maximum grip strength across the entire 2½" length
- Heavy-duty material construction using Grade 8 steel for critical structural applications
- Regulatory compliance assurance meeting ASME B18.2.1, RoHS 3, and REACH standards
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical engineering solutions where high tensile strength and reliable fastening are paramount. The steel construction with Rockwell C33 hardness provides exceptional resistance to shear forces and environmental degradation, making them ideal for heavy machinery, structural steel connections, and industrial equipment assembly. The 3/8"-16 UNC coarse threading ensures rapid installation while maintaining vibration resistance in dynamic applications. The fully threaded design maximizes surface contact for superior clamping force distribution, while the external hex drive accommodates high-torque installation tools. These industrial hex screws are engineered to withstand extreme mechanical stresses while maintaining integrity in critical right-hand thread fastener applications across manufacturing, construction, and automotive sectors.
Specification Summary & Compliance
This hex head screw features precision 3/8"-16 UNC coarse threads with Class 2A fit tolerance for consistent performance. Manufactured to ASME B18.2.1 specifications and meeting SAE J429 Grade 8 requirements, these fasteners deliver guaranteed mechanical properties including 150,000 psi tensile strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.
