S-91309A794 5/8"-11 x 1" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating, extending service life in harsh industrial environments
• High tensile strength of 60,000 PSI ensures reliable performance under heavy loads and vibration
• Rockwell B69 hardness provides excellent durability and resistance to wear and deformation
• Class 2A coarse UNC threads enable faster assembly and reduced cross-threading risks
• External hex drive design allows for high-torque installation with standard tools
• Full threading along the 1" length maximizes grip and load distribution in connected materials
• Compliance with ASME B18.2.1 and ASTM A307 guarantees consistent quality and interchangeability

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 5/8"-11 UNC hex head screws address critical assembly challenges. The high-strength steel construction, combined with zinc plating, provides robust protection against rust and chemical exposure, making them ideal for outdoor machinery, structural frameworks, and heavy equipment. The coarse thread design ensures quick installation in wood, metal, and composite materials, reducing labor time while maintaining 60,000 PSI tensile strength. With external hex drive compatibility, they facilitate secure fastening in confined spaces, enhancing operational efficiency in construction, automotive, and manufacturing sectors where reliability is paramount.

Specification Summary & Compliance

This product features precise Class 2A thread fit per UNC standards, ensuring consistent engagement and ease of assembly. Manufactured in compliance with ASME B18.2.1 and ASTM A307 specifications, it meets rigorous dimensional and mechanical requirements. Environmental and safety standards are upheld through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming the absence of hazardous substances for sustainable industrial use.