S-94288A316 3/8"-16 x 1 1/4" Extreme-Strength Stainless Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh environments and outdoor applications
• Exceptional mechanical strength with 170,000 psi tensile strength and Rockwell C38 hardness for heavy-duty load-bearing applications
• Reliable thread engagement with UNC coarse thread and Class 2A fit, ensuring consistent performance and easier assembly
• Enhanced stability and load distribution through the integrated flange design, reducing the need for separate washers
• Optimized for high-torque applications with external hex drive design, providing secure tool engagement during installation
• Full threading along the entire 1-1/4" length offers maximum adjustability and holding power in various material thicknesses
• Right-hand thread direction provides standard, intuitive installation compatible with most industrial equipment

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 18-8 stainless steel hex head screws deliver critical performance advantages where corrosion resistance and structural integrity are paramount. The combination of UNC coarse threading and Class 2A thread fit ensures reliable engagement in steel framing, heavy machinery, and structural assemblies, while the flanged design provides superior bearing surface distribution that prevents joint loosening under vibration. With fully threaded construction and external hex drive, these fasteners offer exceptional pull-out resistance in automotive chassis components, construction steelwork, and industrial equipment maintenance - solving common challenges of material fatigue, environmental degradation, and installation efficiency in professional settings.

Specification Summary & Compliance

This 3/8"-16 x 1-1/4" hex head screw features precision UNC coarse threads with Class 2A thread fit tolerance for consistent mating with standard nuts and tapped holes. Manufactured from 18-8 stainless steel with Rockwell C38 hardness and 170,000 psi tensile strength, the fastener meets industry standards for mechanical performance. The external hex drive and flanged design comply with industrial fastening specifications, while the material composition conforms to RoHS and REACH environmental directives for restricted substances.