S-98797A029 1/4"-20 ASME B18.2.2 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced Durability - Black corrosion-resistant coated steel construction provides superior protection against rust and environmental degradation, extending service life in demanding conditions.
• Reliable Heavy-Duty Performance - Grade 5 strength classification ensures high tensile strength and load-bearing capacity for secure fastening in industrial applications.
• Optimized Thread Engagement - Coarse UNC thread with Class 2B fit offers excellent vibration resistance and easier assembly, reducing the risk of cross-threading.
• Industry Standard Compliance - Manufactured to ASME B18.2.2 specifications, guaranteeing dimensional accuracy and interchangeability with standard components.
• Environmental Responsibility - RoHS 3 and REACH compliance ensures safe use without hazardous substances, meeting global regulatory requirements.
• Versatile Application - Standard external hex drive (7/16" width) allows for easy installation with common tools, suitable for various machinery and equipment.
• Consistent Performance - Right-hand thread direction and precise 1/4"-20 thread size deliver predictable, repeatable fastening results in production environments.

Professional Applications & Engineering Value

Engineered for industrial heavy-duty applications, this Grade 5 hex nut addresses critical challenges in machinery assembly, construction, and automotive sectors where vibration loosening and corrosion are primary concerns. The black corrosion-resistant coated steel material provides an essential barrier against moisture and chemical exposure, significantly reducing maintenance frequency in harsh operating environments. With its coarse UNC thread pattern and Class 2B thread fit, the nut ensures rapid installation while maintaining secure connections under dynamic loads. The standardized ASME B18.2.2 compliance guarantees perfect compatibility with existing 1/4"-20 threaded components, eliminating assembly errors and streamlining production workflows. These features make it particularly valuable for structural frameworks, equipment mounting, and other applications requiring reliable, long-lasting fastening solutions that withstand rigorous operational demands.

Specification Summary & Compliance

This hex nut maintains Class 2B thread fit tolerance per ASME B18.2.2 standards, ensuring precise dimensional accuracy with 1/4"-20 UNC coarse threads and right-hand thread direction. Manufacturing complies with ASME B18.2.2 specifications for hexagonal nuts, featuring standard profile with 7/16" width and 7/32" height. The product fully meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, confirming absence of restricted substances for safe industrial use worldwide.