S-91271A799 5/8"-11 x 1 1/2" IFI 115 12-Point Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 170,000 psi tensile strength for reliable performance in demanding applications
• Superior thread engagement through Class 3A precision threads ensuring secure, vibration-resistant connections
• Enhanced durability from Rockwell C37 hardness alloy steel construction resisting wear and deformation
• Streamlined installation with external 12-point drive and flanged design eliminating separate washers
• Full-threaded reliability providing maximum grip length and uniform stress distribution
• Regulatory compliance meeting IFI 115 specifications and environmental standards including RoHS 3 and REACH
• Optimized for industrial use with coarse UNC threads enabling quick assembly in tough materials

Professional Applications & Engineering Value

This 12-point flanged screw delivers critical engineering advantages in heavy machinery, structural assemblies, and high-vibration environments. The alloy steel construction with Rockwell C37 hardness provides exceptional resistance to shear forces and mechanical stress, while the Class 3A thread fit ensures precise engagement that maintains integrity under dynamic loads. The integrated flanged head distributes clamping force over a wider surface area (15/16" diameter), preventing surface damage and reducing the need for additional components. The external 12-point drive accommodates standard industrial wrenches for high-torque applications where reliability is paramount. These features combine to create a heavy-duty fastener that solves common challenges of joint failure, installation complexity, and maintenance downtime in industrial settings.

Specification Summary & Compliance

This fastener maintains Class 3A thread tolerance per UNC standards with 5/8"-11 coarse threading and right-hand orientation. Manufacturing conforms to IFI 115 specifications with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The 1-1/2" length and fully threaded design ensure consistent performance across the entire engagement area, while the 5/8" external 12-point drive provides standardized tool compatibility for industrial applications.