S-97135A432 7/8"-9 Locknuts

Key Features & Benefits at a Glance

• Vibration-resistant locking with nylon insert that maintains secure fastening in high-stress applications
• Exceptional strength and durability from Grade 8 steel construction for heavy-duty industrial use
• Reliable performance in elevated temperatures with nylon insert rated up to 220°F (104°C)
• Corrosion protection through black-oxide surface treatment for extended service life
• Precise coarse threading with UNC 7/8"-9 specification and Class 2B fit for easy installation and secure engagement
• Standard external hex drive for compatibility with common tools and straightforward installation
• Environmental compliance meeting RoHS 3 and REACH standards for safe industrial use

Professional Applications & Engineering Value

This Grade 8 heavy-duty locknut delivers critical vibration resistance in demanding industrial environments where loosening under dynamic loads poses significant safety risks. The nylon insert locking mechanism creates consistent friction against mating threads, maintaining clamp force without damaging threads or requiring additional locking components. The black-oxide steel construction provides essential corrosion protection while the UNC coarse threading ensures rapid assembly in manufacturing and maintenance applications. Engineered for machinery, automotive, and construction equipment, this locknut solves the persistent challenge of fastener loosening in high-vibration scenarios while offering high-temperature capability up to 220°F, making it suitable for engines, powertrains, and industrial machinery operating under thermal stress.

Specification Summary & Compliance

This locknut features precision 7/8"-9 UNC coarse threads with Class 2B thread fit for reliable engagement and dimensional accuracy. The external hex drive measures 1-1/4" across flats with a height of 63/64". Manufactured to industrial standards for Grade 8 strength classification, the component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance in global markets.