S-91283A150 1 1/8"-7 x 5" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 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 capability with 100,000 psi tensile strength for reliable performance in demanding applications
- Superior wear resistance due to Rockwell C19 hardness, ensuring extended service life under repetitive stress
- Optimized thread engagement with UNC coarse threading and Class 2A fit for faster assembly and reduced cross-threading risks
- Robust external hex drive design providing secure tool grip and high torque transmission during installation
- Partial threading configuration offering both threaded and unthreaded sections for precise clamping control
- Full regulatory compliance with RoHS 3 and REACH standards, ensuring environmental safety in global markets
- Heavy-duty construction meeting ASME B18.2.1 specifications for consistent quality and interchangeability
Professional Applications & Engineering Value
This Grade 5 steel hex head screw delivers critical engineering solutions for industrial assembly challenges where vibration resistance and structural integrity are paramount. The 1 1/8"-7 UNC coarse thread configuration ensures rapid installation in heavy machinery, structural steel connections, and equipment manufacturing while maintaining Class 2A thread fit precision. The partially threaded design provides optimal stress distribution, preventing joint loosening in high-vibration environments. Manufactured to ASME B18.2.1 standards, this external hex drive fastener offers reliable performance in construction, automotive, and industrial maintenance applications where 100,000 psi tensile strength and consistent dimensional accuracy are essential for long-term operational safety.
Specification Summary & Compliance
This hex head screw maintains Class 2A thread fit tolerance with 1 1/8"-7 UNC coarse threading and 5" overall length. Manufactured according to ASME B18.2.1 specifications and SAE J429 Grade 5 requirements, it features Rockwell C19 hardness and 100,000 psi tensile strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across industrial sectors.
