S-91268A958 1 1/2"-6 x 5" 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 reliable performance in high-stress applications
- Superior wear resistance due to Rockwell C33 hardness, extending service life in demanding environments
- Optimized clamping force distribution through partial threading design for enhanced joint security
- Quick installation and removal with coarse UNC threads and external hex drive for efficient maintenance
- Precise thread engagement with Class 2A fit ensuring consistent performance and vibration resistance
- Heavy-duty construction meeting ASME B18.2.1 and SAE J429 standards for industrial reliability
- Environmentally compliant with RoHS 3 and REACH regulations for sustainable operations
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver exceptional engineering value in heavy machinery, structural steel connections, and industrial equipment assembly. The 1-1/2"-6 UNC coarse thread configuration provides superior resistance to vibration loosening while enabling rapid installation in thick materials. The partially threaded design concentrates clamping force precisely where needed, preventing joint failure in dynamic load conditions. Manufactured from high-strength steel with Rockwell C33 hardness, these fasteners withstand extreme mechanical stress and environmental exposure. The external hex drive accommodates standard tools for straightforward maintenance in confined spaces, making them ideal for construction, mining, and manufacturing applications requiring reliable, high-tensile fastening solutions.
Specification Summary & Compliance
This Grade 8 hex head screw features precise Class 2A thread fit with 1-1/2"-6 UNC coarse threading and 5" length. Manufactured to ASME B18.2.1 and SAE J429 specifications, ensuring dimensional accuracy and mechanical performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for hazardous substance restrictions.
