S-90128A241 1/4"-20 x 3/8" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket 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 170,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
- Superior corrosion resistance from zinc-plated alloy steel construction extends service life in harsh industrial environments.
- Precise Class 3A thread fit guarantees secure, vibration-resistant connections for critical assemblies.
- Hex socket drive design allows for high-torque installation and removal in confined spaces.
- Fully threaded shank provides consistent clamping force along the entire length for uniform load distribution.
- Compliance with ASTM A574 ensures material quality and manufacturing consistency for engineering applications.
- RoHS 3 and REACH compliance meets international environmental regulations for safe usage.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, this 1/4"-20 UNC Socket Head Cap Screw delivers robust performance where reliability is non-negotiable. The zinc-plated alloy steel construction provides excellent corrosion resistance, making it ideal for machinery, automotive, and outdoor equipment exposed to moisture or chemicals. Its coarse UNC thread and Class 3A fit ensure quick assembly and superior vibration resistance, reducing maintenance needs. The hex drive socket enables efficient installation in tight spaces, while the fully threaded design offers uniform stress distribution. These features collectively address common challenges like loosening under dynamic loads and environmental degradation, enhancing operational safety and longevity in high-tensile applications.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC coarse thread with Class 3A tolerance for precise fit, a 3/8" length, and a 3/16" hex drive. It meets ASTM A574 specifications for material and manufacturing quality, and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe and regulated use in various industries.
