S-90166A115 1/4"-20 x 1 1/4" ASTM F593, IFI 111 Stainless Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction for long-term reliability in harsh environments
• Superior tensile strength rated at 70,000 psi ensures secure fastening under high-stress industrial applications
• Optimized thread engagement with UNC coarse spacing and Class 2A fit provides reliable installation and vibration resistance
• Integrated flange design eliminates need for separate washers, reducing assembly time and component count
• External hex drive compatibility with 3/8" head width allows for standard tooling and straightforward installation
• Full threading along 1-1/4" length maximizes grip range and adjustment flexibility in various material thicknesses
• Industry compliance assurance meeting ASTM F593, RoHS 3, and REACH standards for quality and environmental safety

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 18-8 stainless steel hex head screws deliver critical performance advantages where corrosion resistance and structural integrity are paramount. The flanged design provides distributed load bearing that prevents surface damage and maintains joint integrity under vibration. With 70,000 psi tensile strength and Rockwell B80 hardness, these fully threaded UNC fasteners maintain clamping force in machinery, structural frameworks, and outdoor equipment. The coarse thread spacing ensures rapid installation in various materials while the external hex drive accommodates standard industrial tools for efficient maintenance operations.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC thread form ensuring consistent performance across applications. Compliant with ASTM F593 specifications for stainless steel bolts, RoHS 3 (2015/863/EU) for hazardous substance restriction, and REACH (EC 1907/2006) for chemical safety. The 1/4"-20 thread size with coarse spacing and 1-1/4" length provides standardized compatibility across industrial systems.