S-99291A630 3/4"-10 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through distorted thread top lock technology that maintains clamp force in high-shock environments
• Enhanced corrosion protection with zinc-flake coating that provides excellent durability in industrial conditions
• Reliable performance under heavy loads with ASTM Grade C certification ensuring consistent mechanical properties
• Precise thread engagement with Class 2B fit UNC coarse threads for easy assembly and secure fastening
• Industry-standard compatibility with 3/4"-10 UNC coarse thread specifications for broad application use
• Convenient installation and removal using standard wrench tools with the external hex drive design
• Environmental compliance assurance meeting both REACH and RoHS 3 standards for global market acceptance

Professional Applications & Engineering Value

This zinc-flake-coated steel locknut with distorted thread technology delivers exceptional performance in demanding industrial environments where vibration-induced loosening poses significant safety risks. The top lock design creates controlled interference with mating threads, providing permanent locking action without requiring additional components. Engineered with UNC coarse threads and Class 2B fit, this 3/4"-10 locknut ensures reliable performance in heavy machinery, construction equipment, transportation systems, and manufacturing applications. The combination of ASTM Grade C material strength and advanced zinc-flake coating offers superior corrosion resistance, making it ideal for outdoor applications and harsh operating conditions where maintenance access is limited.

Specification Summary & Compliance

This distorted thread locknut features precise 3/4"-10 UNC coarse threads with Class 2B fit tolerance for optimal thread engagement. The external hex drive design measures 1 1/8" across flats with a 41/64" height profile. Manufactured to ASTM Grade C specifications for consistent mechanical properties and performance. Fully compliant with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, ensuring environmental responsibility and global market acceptance.