S-91271A583 5/16"-18 x 1" IFI 115 12-Point Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with 170,000 psi tensile strength for demanding industrial applications
• Superior thread engagement through Class 3A thread fit ensuring precise, vibration-resistant fastening
• Enhanced torque transmission via external 12-point drive design allowing high-torque installation
• Increased surface contact with integrated flange providing improved load distribution
• Optimized material performance through alloy steel construction with Rockwell C37 hardness
• Reliable coarse thread performance with UNC 5/16"-18 threading for quick assembly and strong holding power
• Full regulatory compliance meeting IFI 115 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these 12-point alloy steel screws deliver exceptional performance in high-stress environments. The combination of 170,000 psi tensile strength and Rockwell C37 hardness ensures reliable performance under extreme mechanical loads, while the Class 3A thread fit provides superior vibration resistance critical for machinery and equipment assembly. The external 12-point drive design enables high-torque installation without stripping, making these UNC coarse thread screws ideal for construction equipment, automotive systems, and industrial machinery where flanged screw design enhances load distribution and prevents loosening under dynamic conditions.

Specification Summary & Compliance

This 5/16"-18 UNC Class 3A screw features precise dimensional accuracy with right-hand coarse threading and fully threaded design. Manufactured to IFI 115 specifications with 1" length and 5/16" drive size. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial sectors.