S-91241A652 8-32 x 3/8" ASME B18.13 Stainless Steel Pan Head Phillips Screws with Spring Lock Washer

Key Features & Benefits at a Glance

• Superior vibration resistance with integrated spring lock washer to maintain tight connections in high-motion environments
• Enhanced corrosion protection through passivated 18-8 stainless steel construction for extended service life
• High tensile strength of 70,000 psi ensures reliable performance under heavy mechanical loads
• Class 2A thread fit provides consistent engagement and smooth assembly with standard UNC coarse threading
• Rockwell B80 hardness delivers excellent durability and resistance to wear in industrial applications
• Phillips No. 2 drive enables efficient installation with common tools while preventing cam-out
• Full threading design allows maximum grip length and adjustment flexibility

Professional Applications & Engineering Value

This 8-32 UNC coarse thread screw with spring lock washer addresses critical vibration-induced loosening in machinery, electrical enclosures, and automotive assemblies. The 18-8 stainless steel construction combined with passivated finish creates a robust barrier against corrosive environments, while the 410 stainless steel washer maintains constant spring tension. Engineers specify this fully threaded fastener for applications requiring repeated disassembly without thread damage, thanks to its Class 2A thread fit and pan head design that distributes clamping force evenly. The combination of 70,000 psi tensile strength and Rockwell B80 hardness ensures reliable performance in high-stress industrial environments where fastener failure is not an option.

Specification Summary & Compliance

Manufactured to ASME B18.13 specifications with Class 2A thread fit and UNC coarse threading. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features include 8-32 thread size, 3/8" length, Phillips No. 2 drive, and passivated finish on both screw and washer components.