S-90580A335 1"-8 ASTM A563 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced Load Distribution - Extra wide profile provides superior surface contact for improved stress distribution in heavy-duty applications
• High-Strength Performance - ASTM Grade C steel construction ensures reliable performance under demanding mechanical stresses
• Precision Thread Compatibility - Class 2B thread fit guarantees smooth assembly and secure fastening with mating components
• Durable Coarse Thread Design - 1"-8 UNC coarse thread configuration resists vibration loosening and simplifies installation
• Regulatory Compliance Assurance - Meets RoHS 3 and REACH standards for environmental safety and material restrictions
• Industry Standard Compliance - Manufactured to ASTM A563 specifications for consistent quality and reliability
• Optimized External Hex Drive - Standard hex profile allows for easy installation with common industrial tools

Professional Applications & Engineering Value

This heavy-duty hex nut delivers exceptional engineering value through its ASTM Grade C steel construction and extra wide profile, specifically designed to address common industrial challenges. The 1"-8 UNC coarse thread configuration provides superior resistance to vibration-induced loosening while facilitating quicker assembly in time-sensitive production environments. The Class 2B thread fit ensures precise mating with corresponding fasteners, reducing the risk of cross-threading and assembly errors. Engineered for demanding applications including structural steel connections, heavy machinery, and industrial equipment, this external drive hex nut offers reliable performance where consistent clamping force and durability are critical. The robust design effectively distributes load across wider surfaces, minimizing point stress concentrations that can lead to fastener failure.

Specification Summary & Compliance

This hex nut features precision Class 2B thread fit tolerance according to UNC standards, ensuring consistent threading performance. Manufactured to ASTM A563 specifications with ASTM Grade C strength classification, the nut maintains dimensional accuracy with 1 5/8" width and 63/64" height. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, meeting current substance restriction requirements. The right-hand thread direction and coarse thread spacing adhere to established industrial fastener protocols for reliable integration into various mechanical systems.