S-92979A265 5/16"-18 x 1 3/4" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Flanged Hex Head Screws
Medium-Strength Grade 5 Steel Flanged 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 tensile strength of 110,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Zinc-plated steel construction provides superior corrosion resistance, extending service life in demanding industrial environments.
- Flanged hex head design eliminates the need for a separate washer, distributing load evenly and speeding up assembly.
- Grade 5 strength classification guarantees consistent mechanical properties, meeting rigorous SAE J429 standards for dependable use.
- Coarse UNC threading offers faster installation and better resistance to vibration loosening compared to fine threads.
- Partially threaded shank allows for precise clamping force control, ideal for materials requiring specific grip ranges.
- Class 2A thread fit ensures easy assembly while maintaining secure fastening, minimizing production delays.
Professional Applications & Engineering Value
This Grade 5 zinc-plated steel hex head screw is engineered to address common industrial challenges such as joint integrity and corrosion. The UNC coarse thread and external hex drive facilitate quick installation in machinery, automotive assemblies, and structural frameworks, where vibration resistance is critical. The flange design enhances stability by increasing the bearing surface, preventing surface damage and reducing maintenance needs. With a Rockwell C22 hardness and robust zinc plating, it withstands harsh conditions, making it a reliable choice for heavy-duty industrial hex bolt applications that demand longevity and compliance with safety standards.
Specification Summary & Compliance
This screw adheres to precise dimensional standards, including Class 2A thread fit for consistent assembly and UNC thread specifications. It meets manufacturing norms under SAE J429 for Grade 5 fasteners and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability in global supply chains.
