S-90696A241 9/16"-18 x 3" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh industrial environments
• Exceptional thread precision with Class 3A fit ensuring reliable, vibration-resistant fastening in critical applications
• High tensile strength of 70,000 psi provides secure clamping force for heavy-duty mechanical assemblies
• Optimized partial threading allows for precise positioning and reduced thread galling in repetitive adjustments
• Enhanced durability with Rockwell B70 hardness offering excellent wear resistance and extended service life
• Secure hex drive engagement with 7/16" drive size preventing cam-out and ensuring proper torque application
• Fine UNF thread profile delivers superior load distribution and improved fatigue resistance compared to coarse threads

Professional Applications & Engineering Value

This 9/16"-18 UNF socket head cap screw delivers critical engineering advantages for industrial applications where precision and reliability are paramount. The 18-8 stainless steel composition provides excellent corrosion resistance in demanding environments including marine, chemical processing, and food equipment. The Class 3A thread fit ensures minimal clearance between mating parts, preventing loosening under vibration while maintaining precise alignment in machinery, automation systems, and precision instruments. The partially threaded design concentrates threads where needed most, reducing installation time and minimizing potential for cross-threading in blind holes. With fine UNF threads, this fastener distributes clamping loads more evenly across engaged threads, making it ideal for high-stress applications requiring repeated disassembly and reassembly.

Specification Summary & Compliance

This socket head cap screw features precision Class 3A thread fit with 9/16"-18 UNF fine threads and right-hand thread direction. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance standards. The product meets RoHS 3 (2015/863/EU) compliance for restricted hazardous substances and REACH (EC 1907/2006) regulations (updated 06/14/2023 235 SVHC) for chemical safety, ensuring environmental responsibility and workplace safety standards.