S-95362A423 1/2"-13 x 2" ASME B18.2.1, SAE J429, ASTM A354BD, MS90728-115 Mil. Spec. High-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Tensile Strength: With 150,000 psi tensile strength, this screw provides superior load-bearing capacity, reducing the risk of failure in high-stress applications.
• Enhanced Corrosion Resistance: The zinc yellow-chromate plating offers excellent protection against rust and environmental degradation, extending service life in harsh industrial conditions.
• Reliable Thread Engagement: Class 2A thread fit and coarse UNC threading ensure easy installation and secure fastening, minimizing cross-threading and assembly errors.
• High-Grade Material Performance: Made from Grade 8 steel with Rockwell C33 hardness, it delivers consistent durability and resistance to wear and deformation.
• Optimized for Heavy-Duty Use: The external hex drive and partially threaded design provide strong torque transmission and precise clamping force in demanding mechanical assemblies.
• Compliance with Industry Standards: Meets ASME B18.2.1, SAE J429, and ASTM A354BD specifications, ensuring reliability and interchangeability in professional applications.
• Environmental and Regulatory Safety: REACH compliant construction supports safe usage and adherence to international chemical regulations.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy machinery, construction, and automotive industries, where vibration, high loads, and corrosive environments are common. The 1/2"-13 UNC coarse thread and partially threaded configuration enhance grip and reduce loosening under dynamic stresses, while the zinc yellow-chromate plating provides a robust barrier against moisture and chemicals. Ideal for structural frames, engine components, and industrial equipment, this fastener ensures long-term reliability, minimizing maintenance downtime and replacement costs. Its compliance with ASME B18.2.1 and other standards guarantees precise dimensions and performance, making it a trusted choice for engineers and procurement specialists seeking durable, high-strength steel fasteners.

Specification Summary & Compliance

This screw features a Class 2A thread fit with UNC coarse threading for consistent dimensional accuracy and ease of assembly. It adheres to manufacturing specifications including ASME B18.2.1, SAE J429, ASTM A354BD, and MS90728-115, ensuring reliable performance in standardized applications. The product is REACH (EC 1907/2006) compliant, confirming its safety and environmental responsibility without restricted substances.