S-96738A053 5/16"-18 x 3/4" ASME B18.3 Vibration-Resistant Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Permanent vibration resistance with integrated Nylon Patch thread locker, eliminating the need for separate locking washers and reducing assembly time.
• Superior corrosion resistance from 18-8 Stainless Steel construction, ensuring long-term reliability in harsh or washdown environments.
• High-strength performance with a 100,000 psi tensile strength and Rockwell B85 hardness for demanding applications.
• Reliable sealing and locking under extreme conditions, with a thread locker effective from -70° to 250° F.
• Precise, secure fit due to Class 3A UNC coarse threads, minimizing the risk of cross-threading and ensuring consistent clamping force.
• Wide industrial compatibility with a standard 1/4" hex drive and socket head profile for easy installation with common tools.
• Dependable pressure handling, rated for up to 1500 psi, making it suitable for pressurized assemblies.

Professional Applications & Engineering Value

This Socket Head Cap Screw is engineered to solve critical fastening challenges in industrial settings. The 18-8 Stainless Steel material provides excellent resistance to corrosion and oxidation, which is vital for machinery in manufacturing, marine, or chemical processing applications. The integral Nylon Patch thread locker ensures the fastener remains securely in place, preventing loosening from vibration—a common failure point in dynamic equipment, automotive assemblies, and conveyor systems. The Class 3A UNC coarse thread facilitates quicker assembly and provides a stronger hold in softer materials or when used with a maximum hole diameter of 0.332". Its ability to maintain integrity across a broad temperature range makes it a reliable choice for outdoor, aerospace, or HVAC applications where thermal cycling is a concern.

Specification Summary & Compliance

This screw features a 5/16"-18 UNC coarse thread with a precise Class 3A thread fit and is fully threaded. It is manufactured to meet ASME B18.3 specifications, ensuring dimensional accuracy and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for hazardous substances.