S-91268A953 1 1/2"-6 x 3 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
- Maximum load-bearing capacity with 150,000 PSI tensile strength for critical structural applications
- Superior wear resistance thanks to Rockwell C33 hardness and Grade 8 steel construction
- Optimal thread engagement with Class 2A thread fit ensuring precise mating with nuts and tapped holes
- Enhanced installation efficiency through coarse UNC threading and external hex drive design
- Full-length fastening capability with complete threading along the 3½" length
- Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications
- Environmental responsibility with RoHS 3 and REACH compliance for global manufacturing
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver exceptional performance in heavy-duty industrial applications where failure is not an option. The combination of 150,000 PSI tensile strength and Rockwell C33 hardness provides reliable resistance against vibrational loosening, shock loads, and extreme stress conditions. The 1½"-6 UNC coarse thread configuration ensures rapid installation in structural steel, heavy machinery, and construction equipment, while the external hex drive allows for high-torque application with standard tools. Manufactured from industrial-grade steel with full threading, these fasteners maintain integrity in demanding environments including mining equipment, agricultural machinery, and transportation infrastructure.
Specification Summary & Compliance
This heavy-duty hex head screw features precise Class 2A thread fit with 1½"-6 UNC coarse thread specifications and right-hand threading. The fastener complies with ASME B18.2.1 dimensional standards and SAE J429 material requirements for Grade 8 classification. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring suitability for global industrial applications requiring restricted substance control.
