S-97646A259 1/2"-13 x 1" 18-8 Stainless Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments.
• Superior mechanical strength with a 100,000 psi tensile rating and Rockwell B100 hardness for reliable, heavy-duty performance.
• Secure and stable fastening provided by the serrated locking flange, which helps prevent loosening under vibration.
• Efficient installation and removal enabled by the external hex drive and 3/4" head width for standard wrenching tools.
• Optimized thread engagement with UNC coarse threading and a Class 2A fit, ensuring easy starts and robust holding power.
• Full-length threading for maximum grip and versatility across a wider range of material thicknesses.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global markets.

Professional Applications & Engineering Value

This 1/2"-13 UNC Hex Head Screw is engineered to solve critical challenges in demanding industrial applications. Its core is made from 18-8 Stainless Steel, providing excellent resistance to rust and corrosion, which is vital for machinery in moist or chemically aggressive settings. The combination of UNC coarse threading and a Class 2A thread fit ensures rapid assembly and a secure, reliable connection that resists vibrational loosening. The integrated serrated locking flange eliminates the need for a separate washer and bites into the mounting surface, providing a permanent, vibration-resistant lock. This makes it an indispensable component for heavy-duty structural frameworks, industrial assembly lines, and construction equipment where failure is not an option. The fully threaded design offers consistent clamping force, making it a versatile and high-performance fastener for engineers and procurement specialists.

Specification Summary & Compliance

This screw adheres to the UNC (Unified Coarse) thread standard with a precision Class 2A thread fit for consistent, reliable engagement. Key dimensional specifications include a 1/2"-13 thread size, a 1" length under the head, and a 1 5/64" flange diameter. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to strict environmental and safety standards for industrial components.