S-92865A558 1/4"-20 x 4" 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, ideal for heavy-duty applications requiring reliable fastening under stress.
- Superior corrosion resistance provided by zinc plating, extending service life in harsh industrial environments.
- High-strength Grade 5 classification ensures consistent performance and durability for demanding mechanical assemblies.
- Easy installation and removal with external hex drive and UNC coarse threading, reducing assembly time and effort.
- Precise Class 2A thread fit guarantees secure engagement and vibration resistance in machinery and equipment.
- Full threading along the 4" length allows for adjustable clamping force and versatile application in various material thicknesses.
- Compliance with industry standards including ASME B18.2.1, ensuring interoperability and reliability in professional settings.
Professional Applications & Engineering Value
Engineered for robust performance, this Grade 5 hex head screw combines zinc plated steel construction with UNC coarse threading to address common industrial challenges like vibration loosening and corrosion. The external hex drive facilitates quick installation with standard tools, while the Class 2A thread fit maintains tight tolerances for secure connections in machinery, structural frameworks, and automotive assemblies. Its 120,000 psi tensile strength and Rockwell C25 hardness make it suitable for high-stress environments, reducing maintenance needs and enhancing operational safety. Ideal for industrial applications requiring dependable, long-lasting fasteners, this screw delivers consistent value in construction, manufacturing, and equipment maintenance.
Specification Summary & Compliance
This fastener features a 1/4"-20 UNC thread with Class 2A fit for precise dimensional accuracy, manufactured in accordance with ASME B18.2.1 and SAE J429 specifications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for global supply chains.
