S-92979A253 5/16"-18 x 1" 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
- High tensile strength of 110,000 psi ensures reliable performance in demanding industrial applications, reducing the risk of fastener failure.
- Zinc-plated steel construction provides excellent corrosion resistance, extending the service life of the screw in various environments.
- Flanged hex head design eliminates the need for a separate washer, offering faster installation and improved load distribution.
- Grade 5 classification and Rockwell C22 hardness deliver superior durability and resistance to wear under high-stress conditions.
- UNC coarse threading with Class 2A fit allows for quick and easy assembly, minimizing cross-threading issues.
- Full threading along the 1" length provides maximum grip and holding power across the entire fastener.
- Compliance with SAE J429, RoHS 3, and REACH ensures the screw meets rigorous industry and environmental standards for safe use.
Professional Applications & Engineering Value
This Grade 5 zinc-plated steel hex head screw is engineered to address common challenges in heavy-duty assembly, such as vibration loosening and corrosion. The UNC coarse thread and Class 2A fit facilitate rapid installation in machinery, automotive, and construction projects, reducing labor time. The flanged design enhances stability and distributes clamping force evenly, preventing surface damage. With a tensile strength of 110,000 psi and Rockwell C22 hardness, it withstands high loads and harsh conditions, making it ideal for industrial fastening where reliability is critical. The zinc plating adds a protective layer, ensuring long-term performance even in moist environments.
Specification Summary & Compliance
This screw features a 5/16"-18 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy, ensuring consistent performance. It is manufactured in accordance with IFI 111 SAE J429 specifications, guaranteeing mechanical properties and quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for industrial use.
