S-90128A380 1/4"-28 x 1 1/2" 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 in high-stress industrial applications, reducing the risk of fastener failure.
- Zinc-plated alloy steel construction provides superior corrosion resistance, extending the service life of your assemblies in harsh environments.
- Class 3A fine thread fit offers precise, secure fastening with minimal backlash, ideal for applications requiring vibration resistance.
- Partially threaded design allows for controlled clamping force and easier alignment in assembled components.
- Rockwell C37 hardness rating delivers excellent wear resistance, maintaining thread integrity through repeated use.
- 3/16" hex drive socket head enables easy installation with standard tools, reducing assembly time and improving efficiency.
- Compliance with ASTM A574, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations for safe, global use.
Professional Applications & Engineering Value
These 1/4"-28 UNF Socket Head Cap Screws are engineered to address critical challenges in industrial settings, such as vibration-induced loosening and corrosion in machinery. The zinc-plated alloy steel material, combined with a fine thread and Class 3A fit, provides a tight, durable connection that withstands dynamic loads and harsh conditions. Commonly used in automotive, aerospace, and heavy equipment assemblies, these screws offer reliable performance where precision and strength are paramount. The partially threaded rod design ensures optimal stress distribution, reducing the risk of thread stripping and enhancing the longevity of connected components. With a hex drive socket head, installation is straightforward, minimizing downtime in production lines.
Specification Summary & Compliance
This product features precise Class 3A thread fit and adheres to UNF fine thread standards with a thread size of 1/4"-28. Manufactured in accordance with ASTM A574 specifications, it ensures consistent quality and performance. The screws are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible sourcing and usage in global markets.
