S-97135A295 7/8"-14 Locknuts

Key Features & Benefits at a Glance

• Maximum vibration resistance through high-temperature nylon insert that maintains locking force up to 220°F
• Superior corrosion protection with zinc yellow-chromate plated steel construction for extended service life in harsh environments
• Heavy-duty performance with Grade 8 strength classification ensuring reliable performance under extreme loads
• Precise thread engagement with UNF fine threading (7/8"-14) and Class 2B fit for secure fastening in critical applications
• Easy installation and removal using standard 1 1/4" external hex drive compatible with common industrial tools
• Consistent locking performance with standard hex nut profile and right-hand thread direction for predictable assembly behavior
• Optimized dimensional stability with 63/64" height providing balanced strength-to-weight ratio for demanding applications

Professional Applications & Engineering Value

This Grade 8 nylon insert locknut delivers exceptional engineering value in high-vibration environments where fastener integrity is critical. The UNF fine threading (7/8"-14) provides superior resistance to loosening under dynamic loads, while the high-temperature nylon insert (rated to 220°F) maintains consistent locking force in thermal cycling conditions. The zinc yellow-chromate plated steel construction offers enhanced corrosion resistance for industrial applications exposed to moisture, chemicals, or outdoor elements. Ideal for heavy machinery, automotive assemblies, construction equipment, and manufacturing systems, this external hex locknut combines precise Class 2B thread fit with reliable vibration resistance, reducing maintenance frequency and preventing costly downtime in critical fastening applications.

Specification Summary & Compliance

This locknut features precision 7/8"-14 UNF fine threading with Class 2B thread fit for optimal engagement and consistent performance. The external hex drive measures 1 1/4" across flats with a 63/64" height, manufactured to Grade 8 strength standards for heavy-duty applications. The nylon insert is rated for continuous service up to 220°F maximum temperature. Manufactured in compliance with industry standards for UNF thread specifications and meets material requirements for industrial fastening applications.