S-90636A077 3/4"-10 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through center-lock distorted thread technology that maintains tightness under extreme conditions
• Exceptional corrosion protection with zinc yellow-chromate plating that withstands harsh industrial environments
• Heavy-duty performance guaranteed by Grade 8 strength classification for high-stress applications
• Reliable thread engagement with Class 2B thread fit ensuring precise, secure fastening connections
• Easy installation and removal using standard external hex drive with familiar 1 1/8" width profile
• Optimized for coarse thread applications with 3/4"-10 UNC threading that resists loosening in dynamic loads
• Dimensional consistency with 41/64" height providing stable, uniform clamping force distribution

Professional Applications & Engineering Value

This Grade 8 heavy-duty locknut addresses critical vibration-induced loosening challenges in demanding industrial environments. The center-lock distorted thread technology creates controlled interference along the thread path, generating consistent friction that counters rotational forces without compromising installation efficiency. Manufactured from zinc yellow-chromate plated steel, this fastener delivers dual protection against both mechanical stress and environmental corrosion, making it ideal for industrial machinery, automotive assemblies, and construction equipment where reliability is non-negotiable. The 3/4"-10 UNC coarse threading combined with Class 2B thread fit ensures rapid installation while maintaining precision alignment in high-vibration applications, significantly reducing maintenance intervals and preventing costly downtime.

Specification Summary & Compliance

This locknut features Class 2B thread fit per UNC standards with right-hand coarse threading (3/4"-10) and standard hex profile (1 1/8" width, 41/64" height). Manufactured to Grade 8 strength requirements with distorted center-lock thread technology, it complies with industrial fastening specifications for heavy-duty applications. The zinc yellow-chromate plating provides RoHS and REACH compliant corrosion protection, ensuring environmental regulation adherence while maintaining optimal performance in demanding operating conditions.