S-92865A020 1/4"-28 x 3" 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 tensile strength of 120,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure.
- Grade 5 classification provides consistent mechanical properties and durability for industrial and construction uses.
- Zinc plating offers effective corrosion resistance, extending service life in various environmental conditions.
- Fully threaded design allows for maximum grip and uniform load distribution along the entire length.
- Class 2A thread fit ensures easy assembly while maintaining secure fastening with standard nuts and tapped holes.
- External hex drive enables high torque application with common tools, facilitating quick installation and removal.
- Compliance with ASME B18.2.1/SAE J429 standards guarantees dimensional accuracy and interchangeability with other standard components.
Professional Applications & Engineering Value
This Grade 5 hex head screw with 1/4"-28 UNF fine thread is engineered to address critical fastening challenges in heavy machinery, structural assemblies, and industrial equipment. The zinc plated steel construction provides essential corrosion protection in environments where moisture or chemicals are present, preventing premature failure. The fully threaded configuration ensures maximum engagement in tapped holes or with nuts, distributing clamping force evenly to resist vibration loosening. With Rockwell C25 hardness and 120,000 psi tensile strength, this fastener maintains integrity under substantial static and dynamic loads, making it ideal for applications requiring reliable, long-term fastening solutions in construction, automotive, and manufacturing sectors.
Specification Summary & Compliance
This 3" length hex head screw features 1/4"-28 UNF fine threads with Class 2A thread fit per ASME standards, ensuring precise dimensional compatibility. Manufactured to meet ASME B18.2.1 and SAE J429 Grade 5 specifications, it guarantees consistent performance and interchangeability. The product is RoHS 3 (2015/863/EU) Compliant, adhering to environmental regulations for hazardous substance restrictions.
