S-90343A134 1/4"-20 x 1" ASME B18.3 18-8 Stainless Steel Thread-Locking Socket Head Screws

Key Features & Benefits at a Glance

• Permanent vibration resistance with epoxy thread locker that eliminates the need for secondary locking mechanisms
• Superior corrosion resistance from 18-8 stainless steel construction for extended service life in harsh environments
• High-load carrying capability with 70,000 psi tensile strength for demanding industrial applications
• Precise thread engagement through Class 3A fit UNC coarse threads ensuring reliable assembly
• Wide temperature tolerance from -60° to 300°F maintaining performance in extreme conditions
• Secure hex drive installation with 3/16" drive size providing positive torque transmission
• Industry-standard compliance meeting ASME B18.3 specifications for guaranteed interchangeability

Professional Applications & Engineering Value

These 18-8 stainless steel socket head cap screws with integrated epoxy thread locker solve critical fastening challenges in vibration-prone environments. The permanent adhesive locking mechanism begins hardening within 15 minutes and reaches full strength in 24 hours, creating an irreversible bond that prevents loosening under dynamic loads. With UNC coarse threads and Class 3A fit, these screws ensure precise alignment and maximum thread engagement in machinery, automotive assemblies, and industrial equipment. The combination of 70,000 psi tensile strength and Rockwell B70 hardness provides exceptional durability while the temperature resistance from -60° to 300°F makes them ideal for outdoor, automotive, and manufacturing applications where thermal cycling occurs.

Specification Summary & Compliance

This socket head cap screw features precise UNC coarse threads with Class 3A thread fit for superior dimensional accuracy. Manufactured to meet ASME B18.3 specifications, ensuring consistent quality and interchangeability. The 1/4"-20 thread size and 1" length provide standardized dimensions for engineering applications. The epoxy thread locker offers permanent locking performance with temperature resistance from -60° to 300°F. Constructed from corrosion-resistant 18-8 stainless steel with Rockwell B70 hardness and 70,000 psi tensile strength for reliable performance in demanding industrial environments.