S-91026A037 7/8"-9 ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional load distribution thanks to the extra wide hex profile, reducing stress concentration and preventing joint failure in high-vibration environments
• Superior corrosion resistance provided by the black-oxide steel finish, extending service life in demanding industrial conditions
• High tensile strength and reliability ensured by ASTM Grade 2H certification, making it suitable for critical heavy-duty applications
• Easy and quick installation with the coarse UNC thread and Class 2B fit, allowing for smooth engagement and reduced assembly time
• Broad compatibility with standard 7/8"-9 UNC bolts and right-hand threading, ensuring seamless integration into existing systems
• Compliance with rigorous industry standards including ASTM A194, guaranteeing consistent quality and performance in structural applications
• Environmentally responsible manufacturing with RoHS 3 compliance, meeting global regulatory requirements for hazardous substances

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this 7/8"-9 UNC hex nut addresses common challenges in construction, machinery, and infrastructure projects. The black-oxide steel material offers enhanced durability against rust and wear, while the extra wide profile distributes clamping force evenly, minimizing the risk of loosening under dynamic loads. Its coarse thread design ensures reliable performance in environments with debris or corrosion, and the Class 2B thread fit provides optimal clearance for efficient assembly without compromising strength. Ideal for use in structural bolting, equipment manufacturing, and maintenance operations, this nut delivers long-term value by reducing downtime and maintenance costs.

Specification Summary & Compliance

This hex nut features precise Class 2B thread fit per UNC standards, with dimensions of 1 7/16" width and 55/64" height. It conforms to ASTM A194 specifications for heavy hex nuts and is manufactured from ASTM Grade 2H steel for high strength. The product is RoHS 3 (2015/863/EU) compliant under exemption 6(a) for lead as an alloying element in steel, ensuring adherence to environmental regulations without sacrificing performance.