S-90519A041 1 1/2"-6 Hex Nuts

Key Features & Benefits at a Glance

• Left-hand thread design prevents loosening in counter-rotating applications, ensuring secure fastening where standard right-hand threads would fail
• Grade 2 steel construction provides reliable strength and durability for demanding industrial environments
• Coarse UNC threading enables quick installation and removal while resisting vibration-induced loosening
• Class 2B thread fit offers optimal balance between easy assembly and secure holding capability
• Standard hex profile allows for universal tool compatibility and straightforward installation with common wrenches
• Full regulatory compliance with RoHS 3 and REACH standards ensures environmental responsibility and global market acceptance
• Heavy-duty 1 1/2"-6 size delivers robust performance in high-stress mechanical applications

Professional Applications & Engineering Value

This left hand thread hex nut addresses critical safety concerns in rotating machinery where reverse torque could cause standard fasteners to loosen. The Grade 2 steel composition provides excellent tensile strength for heavy-load applications while maintaining cost-effectiveness. The coarse UNC thread pattern ensures reliable performance in high-vibration environments common in industrial equipment, manufacturing machinery, and automotive systems. Engineered with a standard external hex drive, this nut facilitates quick maintenance and replacement without requiring specialized tools. The combination of left-hand threading and robust steel construction makes this fastener ideal for applications requiring counter-rotational security, such as rotating shafts, mixing equipment, and specialized machinery where directional torque management is critical.

Specification Summary & Compliance

This hex nut features precise 1 1/2"-6 UNC coarse threads with Class 2B thread fit per inch-series standards, ensuring proper engagement and reliable performance. Manufactured from Grade 2 steel with dimensions of 2 1/4" width and 1 9/32" height, this fastener meets industrial strength requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial applications and environmental standards.