S-92327A431 1"-8 x 6" ASME B18.2.1, SAE J429 Square Head Screws

Key Features & Benefits at a Glance

• Exceptional Durability – SAE Grade 5 classification with 120,000 PSI tensile strength and Rockwell C25 hardness ensures reliable performance in high-stress environments.
• Superior Corrosion Resistance – Zinc yellow-chromate plating provides long-lasting protection against rust and environmental degradation.
• Easy Installation & Removal – External square drive head allows for secure tool engagement and high-torque application without stripping.
• Wide Compatibility – 1"-8 UNC coarse threading with Class 2A fit ensures consistent engagement and interchangeability across standard industrial components.
• Full Thread Engagement – Fully threaded 6" length offers maximum grip and adjustability across thick materials and assemblies.
• Industry Compliance – Manufactured to ASME B18.2.1 and SAE J429 standards, guaranteeing dimensional accuracy and material consistency.
• Right-Hand Thread Design – Standard threading direction simplifies assembly and maintenance procedures for operators.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this Grade 5 square head screw delivers critical reliability where vibration, heavy loads, and environmental exposure are concerns. The zinc yellow-chromate plated steel construction resists corrosion in outdoor or humid conditions, extending service life in construction, machinery, and structural applications. With 1"-8 UNC coarse threading and a Class 2A thread fit, it ensures rapid assembly and secure fastening in wood, metal, and composite materials. The external square drive head accommodates high torque requirements, reducing the risk of tool slippage during installation. Ideal for heavy-duty bolting in equipment frames, conveyor systems, and infrastructure projects, this fastener combines medium strength with precision manufacturing to minimize downtime and maintenance costs.

Specification Summary & Compliance

This square head screw features a 1"-8 UNC coarse thread with Class 2A tolerance for consistent fit and performance. It meets ASME B18.2.1 and SAE J429 specifications, ensuring adherence to recognized industrial standards for dimensions, material properties, and mechanical requirements. The product is fully threaded, right-hand direction, and manufactured from steel with a zinc yellow-chromate finish for enhanced durability and compliance with common industry regulations.