S-97135A439 1 1/4"-12 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking mechanism that maintains secure fastening in high-stress environments
• Exceptional strength performance with Grade 8 classification, ensuring reliable performance in heavy-duty applications
• Enhanced corrosion protection from black-oxide steel construction that extends service life in demanding conditions
• Precise thread engagement with Class 2B UNF fine threads providing superior clamping force and reduced loosening risk
• High-temperature capability with nylon insert rated to 220°F, suitable for various industrial thermal environments
• Industry compliance assurance meeting both REACH and RoHS 3 environmental standards for global applications
• Easy installation and removal with standard external hex drive design compatible with common wrench tools

Professional Applications & Engineering Value

This Grade 8 heavy-duty locknut delivers critical vibration resistance where conventional fasteners fail. The nylon insert locking mechanism creates consistent friction against mating threads, preventing rotational loosening under extreme dynamic loads. Engineered with black-oxide steel construction, it offers superior corrosion resistance compared to standard finishes, making it ideal for automotive, construction, and industrial machinery applications. The 1 1/4"-12 UNF fine thread configuration ensures precise thread engagement in critical assemblies, while the 220°F temperature rating accommodates various operating environments. This combination of high-strength materials and advanced locking technology provides reliable performance in vibration-prone applications where safety and durability are paramount.

Specification Summary & Compliance

This locknut features Class 2B thread fit precision with UNF (Unified National Fine) thread standards for optimal engagement. The manufacturing complies with Grade 8 strength requirements, ensuring consistent performance under heavy loads. Environmental compliance includes full adherence to REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) standards, making it suitable for regulated industries. The external hex drive follows standard industrial profiles for universal tool compatibility, while the right-hand thread direction aligns with conventional installation practices.