S-90499A860 1 1/4"-12 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional Tensile Strength: Grade 8 classification ensures reliable performance in high-stress and heavy-duty applications, preventing fastener failure.
• Superior Thread Engagement: Fine UNF 1 1/4"-12 threading and Class 2B fit provide a secure, vibration-resistant connection that maintains clamp load.
• Robust Material Integrity: Made from high-strength steel for excellent durability and resistance to wear, shear, and environmental factors.
• Optimized Wrenching: Standard external hex drive and 1 7/8" width allow for easy installation and high torque application with common tools.
• Precision Manufacturing: Inch system measurement and right-hand thread direction ensure consistent, interchangeable use in standardized assemblies.
• Enhanced Safety & Compliance: Full adherence to RoHS 3 and REACH standards guarantees safe use in regulated industries and global markets.
• Compact, High-Strength Design: 1 1/16" height offers a low-profile yet robust fastening solution where space is constrained.

Professional Applications & Engineering Value

This Grade 8 steel hex nut is engineered to address critical challenges in heavy machinery, construction, and automotive sectors where fine UNF threading is essential for precise adjustment and vibration resistance. The Class 2B thread fit minimizes the risk of cross-threading and ensures smooth engagement, reducing assembly time and potential damage to mating components. Its external hex drive facilitates quick installation and removal with standard wrenches, even in confined spaces. The combination of high-strength steel material and right-hand thread direction makes it ideal for dynamic load applications, such as engine mounts, structural frames, and industrial equipment, where reliability and longevity are paramount. By providing a secure, durable fastening solution, this nut helps prevent downtime and maintenance costs in demanding operational environments.

Specification Summary & Compliance

This hex nut features a 1 1/4"-12 UNF fine thread with Class 2B thread fit for precise dimensional accuracy and smooth assembly. Manufactured to Grade 8 strength standards, it ensures consistent performance under high tensile and shear loads. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, supporting safe and sustainable use. Dimensions include a width of 1 7/8" and height of 1 1/16", adhering to the inch measurement system for broad compatibility in industrial applications.