S-96242A656 5/16"-18 x 2 1/4" 12-Point Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 450 stainless steel construction for long-lasting performance in harsh environments
• Superior torque transmission through the external 12-point drive design, preventing tool slippage during high-tension applications
• Enhanced load distribution thanks to the integrated flange, reducing surface pressure and preventing material damage
• Precision thread engagement with Class 3A fit ensuring reliable, vibration-resistant connections in critical assemblies
• High mechanical strength delivering 170,000 psi tensile strength and Rockwell C37 hardness for heavy-duty applications
• Optimized partial threading providing maximum grip length while maintaining unthreaded shank stability
• Industry-standard compatibility with 5/16"-18 UNC coarse threads for easy integration into existing systems

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 12-point flange screws in 450 stainless steel provide critical solutions for vibration-prone assemblies and corrosive operating conditions. The external 12-point drive enables high-torque installation without cam-out, while the integrated flange eliminates the need for separate washers, streamlining installation in confined spaces. The Class 3A thread fit ensures precise engagement in UNC coarse thread applications, maintaining clamp load integrity under dynamic stresses. With 170,000 psi tensile strength and Rockwell C37 hardness, these partially threaded fasteners deliver exceptional performance in heavy machinery, structural frameworks, and industrial equipment where reliability is paramount.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 3A thread fit tolerance and UNC thread form specifications. The 5/16"-18 coarse thread configuration ensures proper engagement while the 2 1/4" length provides optimal fastening capability. These 12-point screws comply with industry standards for external 12-point drive fasteners and are manufactured from 450 stainless steel meeting relevant material specifications. The product conforms to RoHS and REACH environmental directives for industrial applications.