S-94407A104 1/4"-20 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking technology that maintains secure fastening in dynamic environments
• Exceptional corrosion protection with black-oxide coated 18-8 stainless steel construction for extended service life
• Reliable high-temperature performance with nylon insert rated up to 220°F for demanding industrial applications
• Precision thread engagement with UNC coarse threads and Class 2B fit ensuring consistent, reliable installation
• Easy installation and removal with standard external hex drive design compatible with common tools
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global manufacturing requirements
• Right-hand thread design providing standard directional fastening for simplified assembly processes

Professional Applications & Engineering Value

This 1/4"-20 nylon insert locknut delivers critical vibration resistance in industrial settings where mechanical stress and constant motion threaten fastener integrity. The black-oxide 18-8 stainless steel construction provides dual protection against corrosion and galling, while the nylon insert locking mechanism creates consistent friction that prevents loosening under extreme conditions. Engineered with UNC coarse threads and Class 2B fit, these locknuts ensure precise thread engagement across multiple installations, making them ideal for machinery, automotive assemblies, and electrical enclosures where reliability cannot be compromised. The 220°F temperature rating maintains performance in elevated temperature environments common in manufacturing and processing applications.

Specification Summary & Compliance

This locknut features 1/4"-20 UNC coarse threads with Class 2B thread fit for consistent dimensional accuracy. The external hex drive (7/16" width) and standard profile (5/16" height) ensure compatibility with industry-standard tools. Manufactured from 18-8 stainless steel with black-oxide finish and nylon insert locking, the product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, making it suitable for regulated industries and international markets.