S-96242A509 1/4"-20 x 1" 12-Point Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life
• Superior fastening strength and reliability from a high 170,000 psi tensile strength and Rockwell C37 hardness, preventing stripping and failure
• Precise, secure thread engagement ensured by Class 3A thread fit and UNC coarse threading, reducing the risk of cross-threading
• Efficient installation and high torque application enabled by the external 12-point drive and 5/16" drive size, compatible with standard sockets
• Enhanced load distribution and vibration resistance thanks to the integrated flange, eliminating the need for a separate washer
• Maximum grip and holding power from the fully threaded design, providing consistent clamping force along the entire 1" length
• Wide industrial compatibility with right-hand, coarse UNC threads meeting common North American fastener standards

Professional Applications & Engineering Value

Engineered for demanding scenarios, these 12-point flanged screws deliver critical performance where vibration resistance, high tensile loads, and corrosion are concerns. The 18-8 stainless steel material provides excellent durability against chemicals and moisture, making these screws ideal for industrial machinery, automotive assemblies, and outdoor equipment. The external 12-point drive allows for high-torque installation in confined spaces, while the UNC coarse thread and Class 3A fit ensure rapid assembly and reliable thread engagement, reducing the risk of loosening under dynamic loads. The built-in flange distributes clamping pressure evenly, protecting sensitive surfaces and simplifying the fastening process by combining screw and washer functions into a single, robust component.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC thread with a Class 3A precision fit for consistent, high-accuracy fastening. Manufacturing adheres to standard inch system dimensions, including a 1" length, 5/16" head width, and fully threaded shank. The 18-8 stainless steel composition ensures compliance with common industry standards for corrosion resistance and mechanical properties. While specific certifications like RoHS or REACH are dependent on supplier documentation, the material is generally recognized for use in regulated applications requiring durable, high-performance industrial fasteners.