S-97646A305 10-32 x 1 1/2" 18-8 Stainless Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 Stainless Steel construction, ideal for harsh environments and reducing replacement frequency.
• Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for reliable performance under high stress.
• Enhanced vibration resistance due to the serrated locking feature under the flange, preventing loosening in dynamic applications.
• Precise and reliable fit with Class 2A thread fit and UNF fine threading, ensuring consistent engagement and reducing assembly errors.
• Simplified installation and removal using a standard external hex drive and accessible hex head design.
• Increased bearing surface and stability from the integrated flange, distributing clamp load effectively and protecting assembled surfaces.
• Compliance with strict environmental regulations including RoHS 3 and REACH, making it suitable for regulated industries and global supply chains.

Professional Applications & Engineering Value

This 10-32 UNF flanged hex head screw is engineered to address critical challenges in industrial assembly, such as vibration-induced loosening and corrosion. The 18-8 Stainless Steel material offers excellent resistance to oxidation and many chemicals, making it ideal for outdoor equipment, marine hardware, food processing machinery, and chemical plant fixtures. Its fully threaded design and Class 2A thread fit provide consistent clamping force and ease of alignment, reducing the risk of cross-threading. The flange eliminates the need for a separate washer, speeding up installation while the serrations lock the fastener securely, maintaining integrity in high-vibration environments like automotive subassemblies or heavy machinery. This combination of corrosion resistance, high tensile strength, and locking features ensures long-term reliability and reduced maintenance in demanding industrial applications.

Specification Summary & Compliance

This screw adheres to UNF fine thread standards with a Class 2A thread fit for consistent dimensional accuracy. It is manufactured from 18-8 Stainless Steel and is fully threaded with a right-hand thread direction. The product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it meets stringent global standards for hazardous substance restrictions.