S-90580A957 1 1/2"-6 ASTM A563 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced Load Distribution with an extra wide 2 3/8" profile for superior stress dispersion in heavy-duty assemblies
• High-Strength Steel Construction ensures reliable performance under extreme mechanical stresses and vibrations
• ASTM A563 Grade C Compliance guarantees material quality and mechanical properties for industrial applications
• Coarse UNC Thread Design provides faster installation and reduced cross-threading risks in rugged environments
• Precise Class 2B Thread Fit delivers consistent engagement and secure fastening with standard bolts
• RoHS 3 Environmental Compliance meets strict regulatory standards for safe usage in sensitive industries
• External Hex Drive Compatibility allows for standard wrench tooling and straightforward maintenance access

Professional Applications & Engineering Value

This heavy-duty hex nut addresses critical challenges in structural and mechanical systems where vibration resistance and load integrity are paramount. The extra wide design significantly increases bearing surface area, preventing material deformation in soft substrates and distributing clamp loads more effectively across joints. Manufactured from high-strength steel per ASTM A563, it maintains dimensional stability under repeated stress cycles common in construction equipment, bridge assemblies, and heavy machinery. The 1 1/2"-6 UNC coarse thread configuration ensures rapid assembly in field conditions while the Class 2B thread fit provides consistent torque performance without galling. These engineering attributes make it ideal for applications requiring dependable, long-term fastening solutions in demanding industrial environments.

Specification Summary & Compliance

This fastener maintains Class 2B thread tolerances per Unified Thread Standard specifications with 1 1/2"-6 UNC coarse threading and right-hand orientation. Manufacturing complies with ASTM A563 Grade C material and mechanical requirements. Dimensions include 2 3/8" width across flats and 1 15/32" height. The product is RoHS 3 (2015/863/EU) compliant for restricted substance control and suitable for industrial applications requiring inch-system fasteners with external hex drive configuration.