S-95362A123 1/4"-20 x 1 1/2" ASME B18.2.1, SAE J429, ASTM A354BD, MS90728-12 Mil. Spec. High-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 150,000 PSI ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from zinc yellow-chromate plating extends service life in harsh or outdoor environments.
• High hardness (Rockwell C33) provides excellent wear resistance, maintaining thread integrity through repeated use.
• Partially threaded design allows for precise clamping force control, ideal for assemblies requiring specific grip lengths.
• Coarse UNC threads enable faster installation and reduced cross-threading risk, saving time in production lines.
• External hex drive offers easy installation with common tools, ensuring efficient maintenance and assembly.
• Compliance with major standards (ASME, SAE, ASTM) guarantees consistent quality and interchangeability in industrial settings.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy-duty industrial applications, such as machinery assembly, structural frameworks, and automotive components. The steel material combined with zinc yellow-chromate plating provides robust protection against corrosion, essential for equipment exposed to moisture or chemicals. Its partially threaded UNC coarse thread design ensures secure fastening in materials where vibration resistance is paramount, while the external hex drive simplifies installation in tight spaces. By meeting ASME B18.2.1, SAE J429, and ASTM A354BD specifications, it delivers reliable performance in high-load scenarios, minimizing downtime and maintenance costs for B2B users in construction, manufacturing, and transportation sectors.

Specification Summary & Compliance

This fastener adheres to precise dimensional tolerances, including Class 2A thread fit for consistent engagement and UNC coarse threading with a 1/4"-20 size. It conforms to ASME B18.2.1, SAE J429, ASTM A354BD, and MS90728-12 standards, ensuring interoperability and safety. Additionally, it is REACH (EC 1907/2006) compliant, meeting environmental regulations for hazardous substances, and supports RoHS directives where applicable, providing assurance for global supply chain integration.