S-90630A215 1 3/4"-5 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking mechanism that maintains secure fastening under dynamic loads
• High-temperature performance with nylon insert rated for continuous operation up to 220°F (104°C)
• Exceptional strength and durability from Grade 8 steel construction for heavy-duty industrial applications
• Reliable coarse thread engagement with UNC Class 2B thread fit ensuring consistent performance and easy installation
• Industry-standard compliance meeting both REACH and RoHS 3 environmental regulations for safe industrial use
• Optimized wrench access with standard external hex drive design for straightforward installation and removal
• Right-hand thread compatibility for standard assembly procedures across industrial equipment and machinery

Professional Applications & Engineering Value

This Grade 8 steel locknut with nylon insert delivers critical vibration resistance in demanding industrial environments where constant motion and mechanical stress threaten fastener integrity. The UNC coarse thread design provides rapid installation while maintaining secure locking capabilities, making it ideal for heavy machinery, construction equipment, and automotive applications. The high-temperature nylon insert maintains its locking properties up to 220°F, ensuring reliable performance in elevated temperature conditions. Engineered with Class 2B thread fit precision, this external hex locknut offers consistent torque values and prevents loosening under extreme vibration, significantly reducing maintenance requirements and downtime in critical assembly applications.

Specification Summary & Compliance

This 1 3/4"-5 UNC locknut features Class 2B thread fit tolerances for precise engagement and reliable performance. Manufactured from high-strength Grade 8 steel with standard external hex drive (2 49/64" width, 2 5/16" height) and right-hand coarse threading. The product fully complies with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, ensuring environmental safety and regulatory compliance for industrial applications worldwide.