S-97646A261 1/2"-13 x 1 1/2" 18-8 Stainless Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Exceptional holding power from 100,000 psi tensile strength and Rockwell B100 hardness for demanding applications
• Enhanced vibration resistance through serrated locking flange design that prevents loosening under dynamic loads
• Quick installation and removal with external hex drive and 3/4" head width for easy tool access
• Reliable thread engagement with Class 2A thread fit ensuring consistent performance in assembly operations
• Versatile coarse UNC threading providing excellent grip in various materials without cross-threading concerns
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for global industrial applications

Professional Applications & Engineering Value

These 18-8 stainless steel hex head screws deliver critical engineering solutions where corrosion resistance and structural integrity are paramount. The fully threaded UNC coarse thread design ensures maximum holding power in metal assemblies, machinery frames, and structural components, while the serrated locking flange eliminates the need for separate washers and provides superior anti-vibration performance. With 100,000 psi tensile strength and Rockwell B100 hardness, these external hex drive screws withstand extreme mechanical stresses in industrial equipment, marine applications, and chemical processing environments. The 1/2"-13 thread size with Class 2A fit guarantees precise mating with standard nuts and tapped holes, reducing assembly time and improving manufacturing efficiency.

Specification Summary & Compliance

This 1/2"-13 UNC hex head flange screw features precise Class 2A thread fit per Unified Thread Standard specifications, ensuring dimensional accuracy and reliable performance. The manufacturing process adheres to strict quality controls for thread diameter (0.5"), length (1-1/2"), and head dimensions (3/4" width, 33/64" height). Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility and global market acceptance. The right-hand thread direction and coarse thread spacing follow industry-standard UNC threading specifications for broad compatibility across industrial applications.