S-94173A325 3/8"-24 x 3 1/2" 12-Point Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating for prolonged service life in harsh industrial environments
• Superior torque transmission through the external 12-point drive design, preventing tool slippage during high-torque applications
• Enhanced load distribution with integrated flange design, eliminating the need for separate washers and reducing assembly time
• Premium strength characteristics with Rockwell C38 hardness and 170,000 psi tensile strength for heavy-duty fastening requirements
• Precision thread engagement with Class 2A UNF fine threading ensuring reliable, vibration-resistant connections
• Optimized thread configuration with partial threading providing maximum grip in specific engagement zones
• Standardized compatibility with 3/8" drive tools and UNF thread specifications for seamless integration into existing systems

Professional Applications & Engineering Value

This black-oxide alloy steel 12-point screw delivers exceptional engineering value through its high-strength construction and specialized design features. The UNF fine threading (3/8"-24) provides superior resistance to vibrational loosening in dynamic applications, while the partial threading configuration ensures optimal stress distribution across critical engagement areas. The external 12-point drive system enables high-torque installation without cam-out risks, making it ideal for heavy-duty industrial equipment, machinery assembly, and automotive applications where reliability is paramount. The black-oxide surface treatment offers enhanced corrosion protection without compromising dimensional accuracy, addressing common failure points in demanding operational environments.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit tolerance per UNF standards, ensuring precise engagement and consistent performance. The 3/8"-24 UNF fine thread configuration follows established industrial specifications, while the partial threading and flanged design provide engineered solutions for specific assembly requirements. Manufactured from alloy steel with Rockwell C38 hardness and 170,000 psi tensile strength, this screw meets rigorous industrial standards for heavy-duty fastening applications. Compliant with relevant industry specifications for material composition and mechanical properties.