S-94173A342 1/2"-13 x 6" 12-Point Screws

Key Features & Benefits at a Glance

• Exceptional durability with 170,000 psi tensile strength and Rockwell C38 hardness for reliable performance in demanding applications
• Corrosion-resistant black-oxide coating on alloy steel enhances longevity and protects against harsh industrial environments
• Integrated flange design eliminates the need for a separate washer, providing a larger bearing surface for secure, vibration-resistant fastening
• Partially threaded shank with a minimum 1-1/4" thread length ensures strong grip and reduces the risk of thread stripping in high-clamp force scenarios
• External 12-point drive and head allows for high-torque application with standard tools, enabling quick and secure installation
• Coarse UNC threading facilitates faster assembly and better performance in materials where fine threads might be prone to damage
• Class 2A thread fit provides consistent, free-spinning assembly with commercial nuts for efficient production line operations

Professional Applications & Engineering Value

This black-oxide alloy steel 12-point screw is engineered to solve critical fastening challenges in heavy machinery, structural steelwork, and industrial equipment assembly. The UNC coarse thread and partially threaded design deliver superior resistance to vibrational loosening, while the integrated flange distributes clamp load effectively, preventing surface damage and maintaining joint integrity. With a 1/2" drive size and external 12-point head, it accommodates high-torque tools for secure installations in confined spaces. The black-oxide surface treatment provides an added layer of corrosion resistance, making it ideal for outdoor or chemically exposed environments where fastener failure is not an option.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. It features a 1/2"-13 thread size, 6" length, and 7/8" flange diameter. Manufactured from alloy steel, it meets industry specifications for high-strength fasteners and is compliant with RoHS and REACH environmental standards, ensuring safe use across various industrial sectors.