S-91247A410 9/16"-18 x 3 1/4" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 Steel Hex Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional load-bearing capacity with 120,000 psi tensile strength for reliable performance in high-stress applications
- Superior corrosion resistance through zinc plating that protects against rust in demanding industrial environments
- Precise thread engagement with Class 2A fit and UNF fine threads ensuring secure, vibration-resistant connections
- Optimized torque transmission via external hex drive design that prevents tool slippage during installation
- Enhanced durability from Rockwell C25 hardness that maintains structural integrity under repeated stress
- Versatile partial threading allowing both secure clamping and adjustable positioning in assembly applications
- Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed interchangeability
Professional Applications & Engineering Value
This Grade 5 hex head screw delivers critical engineering solutions where structural integrity matters most. The zinc plated steel construction provides essential corrosion protection for outdoor equipment, machinery frames, and structural steel connections exposed to environmental elements. With its 9/16"-18 UNF fine threading and Class 2A thread fit, this fastener maintains precise clamping force in vibration-prone applications while the partial threading design allows for both secure fastening and adjustment flexibility. The external hex drive ensures efficient installation with standard tools, making it ideal for heavy-duty industrial assemblies, construction frameworks, and manufacturing equipment where 120,000 psi tensile strength prevents joint failure under dynamic loads.
Specification Summary & Compliance
Manufactured to exacting ASME B18.2.1 and SAE J429 Grade 5 specifications with Class 2A thread fit tolerances ensuring precise dimensional accuracy. This 9/16"-18 UNF hex head screw features zinc plating surface treatment and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The fastener delivers verified mechanical properties including Rockwell C25 hardness and 120,000 psi tensile strength for guaranteed performance in industrial applications.
