S-92979A257 5/16"-18 x 1 1/4" 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 excellent corrosion resistance, extending service life in harsh industrial and outdoor environments.
- Flanged hex head design eliminates the need for a separate washer, offering faster installation and increased load distribution.
- Grade 5 classification and Rockwell C22 hardness guarantee consistent durability and resistance to wear under heavy-duty use.
- UNC coarse threading with Class 2A fit ensures quick, secure engagement and reduces cross-threading risks during assembly.
- Fully threaded shank allows for maximum grip length and uniform clamping force across the entire fastened joint.
- Compliance with SAE J429, RoHS 3, and REACH assures adherence to industry standards and environmental regulations for safe, global use.
Professional Applications & Engineering Value
Engineered for demanding industrial and construction projects, this Grade 5 zinc-plated steel hex head screw addresses common fastening challenges such as vibration loosening and environmental degradation. The external hex drive and flanged head provide superior torque transmission and stability, minimizing the need for additional components. Its UNC coarse thread and Class 2A thread fit facilitate rapid installation in coarse-grained materials, while the 110,000 psi tensile strength ensures integrity under dynamic loads. Ideal for machinery, structural assemblies, and heavy equipment where corrosion-resistant, high-strength fasteners are critical to operational safety and longevity.
Specification Summary & Compliance
This fastener meets precise dimensional standards with a Class 2A thread fit and UNC coarse threading (5/16"-18), ensuring compatibility and ease of use. Manufactured in accordance with IFI 111 SAE J429, it guarantees consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in regulated markets and commitment to environmental standards.
