S-90251A154 M2.5 x 4 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Permanent vibration resistance with nylon patch thread locking, ensuring reliable fastening in high-stress applications
• Superior corrosion protection from 18-8 stainless steel construction, ideal for harsh industrial environments
• High-temperature stability with locking performance maintained from -50° to 250°F
• Enhanced installation torque through hex drive design, preventing tool slippage during assembly
• Precise thread engagement with Class 6g fit and coarse pitch for quick, secure fastening
• Space-saving headless design allowing flush mounting in confined assembly spaces
• Cup tip configuration providing superior grip and resistance to component movement

Professional Applications & Engineering Value

This M2.5 x 0.45mm nylon patch locking set screw delivers critical vibration resistance in demanding mechanical assemblies where loosening under dynamic loads compromises safety and performance. The 18-8 stainless steel construction provides exceptional corrosion resistance for outdoor equipment, marine applications, and chemical processing environments. The headless hex drive design enables installation in tight spaces while the coarse metric thread ensures rapid assembly with reduced cross-threading risk. The nylon patch locking mechanism creates permanent friction that withstands temperature fluctuations from -50° to 250°F, making it ideal for automotive components, industrial machinery, and precision instruments where maintenance access is limited and reliability is paramount.

Specification Summary & Compliance

Manufactured to DIN 916 / ISO 4029 standards with Class 6g thread fit precision, this set screw ensures dimensional accuracy and interchangeability. The component features Rockwell B80 hardness for optimal strength and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements, making it suitable for global industrial applications with strict regulatory standards.