S-90343A122 8-32 x 3/4" ASME B18.3 18-8 Stainless Steel Thread-Locking Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional holding power provided by Class 3A thread fit, ensuring precise engagement and vibration resistance
• Permanent locking capability through epoxy adhesive thread locker that maintains integrity from -60° to 300°F
• High tensile strength of 70,000 psi combined with Rockwell B70 hardness for reliable performance under heavy loads
• Optimized drive efficiency with 9/64" hex socket design, allowing secure installation in confined spaces
• Industry-standard compliance with ASME B18.3 specifications, guaranteeing consistent quality and interchangeability
• Versatile coarse threading (UNC 8-32) enables quick assembly and disassembly in various applications

Professional Applications & Engineering Value

This socket head cap screw delivers critical engineering solutions where vibration resistance, chemical exposure, and thermal stability are paramount. The 18-8 stainless steel construction prevents rust and corrosion in demanding environments like marine equipment, food processing machinery, and chemical plants. The epoxy thread locker provides permanent fastening security, eliminating the need for secondary locking mechanisms while maintaining performance across extreme temperature ranges (-60° to 300°F). With its Class 3A thread fit and UNC coarse threading, this fastener ensures rapid installation in high-volume production settings while providing superior resistance to loosening under dynamic loads. The combination of 70,000 psi tensile strength and standardized ASME B18.3 dimensions makes it an ideal choice for precision equipment, automotive assemblies, and heavy machinery where reliability cannot be compromised.

Specification Summary & Compliance

This socket head cap screw features precision Class 3A thread fit with 8-32 UNC coarse threading and right-hand thread direction. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance standards. The fastener is fully threaded with standard socket head profile and meets industry requirements for mechanical properties including 70,000 psi tensile strength and Rockwell B70 hardness. The epoxy thread locker begins hardening in 15 minutes and reaches full strength within 24 hours, providing permanent locking performance across the specified temperature range.