S-91247A683 7/16"-14 x 3 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 capacity with 120,000 psi tensile strength for reliable performance in high-stress applications
- Superior corrosion resistance through zinc plating, extending service life in challenging environments
- Optimized thread engagement with UNC coarse threads and Class 2A fit ensuring secure fastening and vibration resistance
- Enhanced installation efficiency with external hex drive design providing maximum torque transfer and easy assembly
- Controlled partial threading allowing precise clamping force distribution across connected components
- Certified material integrity with Grade 5 steel and Rockwell C25 hardness for consistent mechanical properties
- Regulatory compliance assurance meeting industry standards for safety and environmental requirements
Professional Applications & Engineering Value
This Grade 5 steel hex head screw delivers critical engineering solutions for industrial assembly challenges. The zinc plated finish provides essential corrosion protection in manufacturing facilities, construction sites, and outdoor equipment where environmental exposure threatens fastener integrity. The UNC coarse thread configuration ensures rapid installation and superior vibration resistance in heavy machinery, structural frameworks, and transportation equipment. With partial threading and 3-1/2" length, this fastener enables precise joint compression while maintaining unthreaded shank strength. The external hex drive accommodates high-torque applications common in maintenance, repair, and production operations, reducing installation time and improving workplace efficiency.
Specification Summary & Compliance
Manufactured to exacting dimensional standards with Class 2A thread fit tolerance for consistent performance. Complies with ASME B18.2.1 and SAE J429 specifications for hex head screws. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Features 7/16"-14 UNC coarse threads with minimum thread length of 1-1/8" and right-hand thread direction.
