S-90519A257 1"-8 Hex Nuts

Key Features & Benefits at a Glance

• Left-hand threading provides secure fastening in applications where standard right-hand threads may loosen due to rotational forces
• Grade 2 steel construction offers excellent strength and durability for general industrial applications
• 1"-8 UNC coarse thread pattern enables faster assembly and reduced cross-threading risk compared to fine threads
• Class 2B thread fit ensures reliable engagement with mating components while maintaining smooth installation
• Standard hex profile allows for easy installation and removal using common wrench tools
• Full regulatory compliance with RoHS 3 and REACH standards ensures environmental responsibility and global market acceptance
• Heavy-duty dimensions (1-1/2" width, 55/64" height) provide substantial bearing surface for enhanced load distribution

Professional Applications & Engineering Value

This left-hand thread hex nut addresses critical engineering challenges in rotating machinery and specialized equipment where reverse-direction threading prevents accidental loosening. The Grade 2 steel composition delivers optimal strength-to-weight ratio for cost-effective performance in demanding environments. The 1"-8 UNC coarse thread configuration excels in applications requiring rapid assembly and disassembly, while the Class 2B fit maintains consistent torque values and clamping force. Particularly valuable in conveyor systems, mixing equipment, and automotive applications, this external hex nut provides reliable left-hand fastening solutions that withstand vibration and rotational stresses. The standard profile ensures compatibility with common tooling, reducing installation time and maintenance costs.

Specification Summary & Compliance

This hex nut features precise Class 2B thread fit per UNC standards, ensuring proper engagement with mating components. Manufactured to inch system specifications with 1"-8 UNC left-hand coarse threads, the fastener meets industry standards for dimensional accuracy. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, containing no substances of very high concern above threshold limits. Constructed from Grade 2 steel, this nut provides reliable performance for general industrial applications requiring left-hand threading solutions.