S-92865A113 5/16"-24 x 1 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
- Exceptional load-bearing capability with 120,000 PSI tensile strength for reliable performance in demanding applications
- Superior corrosion resistance through zinc plating, extending service life in harsh industrial environments
- Precise thread engagement with UNF fine threading and Class 2A fit ensuring secure, vibration-resistant connections
- Optimized torque transmission through external hex drive design for efficient installation and removal
- Enhanced durability with Rockwell C25 hardness providing excellent wear resistance
- Full threading coverage along the 1½" length for maximum grip and load distribution
- Regulatory compliance assurance meeting industry standards for quality and environmental safety
Professional Applications & Engineering Value
These Grade 5 steel hex head screws deliver critical performance advantages for industrial assembly applications where vibration resistance and structural integrity are paramount. The UNF fine threading provides superior clamping force distribution compared to coarse threads, making them ideal for precision equipment, automotive components, and machinery where fine adjustment and secure fastening are essential. The zinc plating creates a protective barrier against oxidation and environmental degradation, significantly extending service life in manufacturing facilities, outdoor equipment, and marine-adjacent applications. The combination of 120,000 PSI tensile strength and Rockwell C25 hardness ensures these fasteners maintain their mechanical properties under sustained loads and dynamic stresses, preventing joint failure in critical assemblies.
Specification Summary & Compliance
Manufactured to exacting dimensional standards with Class 2A thread fit tolerance for consistent engagement and reliable performance. These 5/16"-24 UNF hex head screws comply with ASME B18.2.1 and SAE J429 Grade 5 specifications for dimensional accuracy and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring safe use across regulated industries and international markets.
