S-90343A119 8-32 x 3/8" ASME B18.3 18-8 Stainless Steel Thread-Locking Socket Head Screws
18-8 Stainless Steel Thread-Locking Socket Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Permanent vibration resistance with integrated epoxy thread locker that prevents loosening in high-stress environments
- Superior corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh industrial conditions
- Precise installation and high torque capability with the 9/64" hex drive and standard socket head profile
- Exceptional load-bearing capacity with a tensile strength of 70,000 psi for demanding applications
- Reliable performance across extreme temperatures, functioning from -60°F to 300°F without degradation
- Guaranteed thread interchangeability with Class 3A fit and 8-32 UNC coarse threads for consistent assembly
- Full-length threading provides maximum grip and uniform clamping force along the entire fastener length
Professional Applications & Engineering Value
This socket head cap screw is engineered to solve critical fastening challenges in industrial machinery, automotive assemblies, and precision equipment. The 18-8 stainless steel material offers excellent resistance to rust and chemical exposure, while the epoxy thread locker ensures permanent retention even under continuous vibration—eliminating the need for secondary locking mechanisms. With its Class 3A thread fit and UNC coarse threads, it enables quick assembly and high reliability in tight spaces, reducing maintenance downtime. The combination of 70,000 psi tensile strength and Rockwell B70 hardness makes it suitable for structural applications where both durability and precision are non-negotiable.
Specification Summary & Compliance
This fastener adheres to ASME B18.3 specifications, ensuring dimensional accuracy and performance reliability. Threads are manufactured to Class 3A fit with 8-32 UNC coarse thread form and right-hand direction. The screw is fully threaded and measures 3/8" in length with a 9/64" hex drive. The epoxy thread locker begins to harden in 15 minutes and reaches full strength in 24 hours, operating within a temperature range of -60°F to 300°F. Compliance with RoHS and REACH is standard for 18-8 stainless steel components.
