S-91283A450 1 1/2"-6 x 5 1/2" 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
- Superior load-bearing capacity with 100,000 PSI tensile strength for reliable performance in demanding applications
- Enhanced durability through Rockwell C19 hardness rating, resisting wear and deformation under stress
- Quick installation and secure fastening with coarse UNC threads and external hex drive design
- Precise thread engagement ensured by Class 2A thread fit, reducing cross-threading risks
- Optimized weight distribution through partial threading design, maintaining structural integrity
- Industry-standard compliance with ASME B18.2.1 and SAE J429 specifications for guaranteed quality
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance for global supply chain compatibility
Professional Applications & Engineering Value
This Grade 5 hex head screw delivers exceptional engineering value in heavy-duty industrial applications where vibration resistance and structural integrity are paramount. The 1 1/2"-6 UNC coarse thread configuration provides superior holding power in steel frameworks, machinery assembly, and structural connections, while the external hex drive enables high-torque installation with standard tools. The partially threaded design concentrates strength where needed most, preventing thread damage in high-stress zones. Manufactured from high-strength steel with precise Class 2A thread fit, this fastener eliminates play in critical joints, reducing maintenance frequency and downtime in manufacturing, construction, and equipment maintenance applications.
Specification Summary & Compliance
This 5 1/2" length hex head screw features precise Class 2A thread fit with 1 1/2"-6 UNC coarse threads and 3 1/4" minimum thread length. Manufactured to ASME B18.2.1 and SAE J429 Grade 5 standards, it delivers consistent dimensional accuracy and mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.
