S-90121A622 3/8"-16 x 3/4" ASME B18.2.1 Stainless Steel Wire-Lockable Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications.
• High-strength performance offering 70,000 psi tensile strength and Rockwell B70 hardness for reliable, heavy-duty load-bearing capabilities.
• Precise and secure fastening ensured by the Class 2A thread fit, reducing the risk of cross-threading and assembly failures.
• Efficient installation and removal with an external hex drive and 9/16" head width, compatible with standard wrenches for quick maintenance.
• Robust coarse UNC threading (3/8"-16) provides excellent grip and vibration resistance in a wide range of materials.
• Full-length threading along the 3/4" shaft ensures maximum engagement and clamping force across the entire fastener length.
• Regulatory peace of mind with compliance to ASME B18.2.1 specifications and RoHS 3 environmental standards.

Professional Applications & Engineering Value

This 3/8"-16 UNC hex head screw is engineered to address critical challenges in industrial assembly, where corrosion resistance and structural integrity are paramount. The 18-8 Stainless Steel material inherently resists rust and chemical exposure, making it suitable for marine, chemical processing, and food-grade equipment. The coarse thread design and Class 2A thread fit provide superior holding power and ease of installation in both soft and hard substrates, reducing the likelihood of thread stripping. With a fully threaded shank and external hex drive, this fastener delivers consistent clamping force and allows for high-torque applications, ensuring long-term reliability in machinery, structural frames, and heavy-duty enclosures. Its compliance with ASME B18.2.1 guarantees dimensional consistency and interoperability with other standard components.

Specification Summary & Compliance

This hex head screw adheres to precise dimensional and performance criteria, including a Class 2A thread fit for unified coarse (UNC) threads, ensuring standard-compliant tolerances for reliable mating. The manufacturing and material specifications meet ASME B18.2.1, confirming its suitability for industrial and construction applications. Additionally, the product is RoHS 3 (2015/863/EU) Compliant, affirming the absence of restricted hazardous substances, aligning with global environmental and safety regulations for sustainable procurement.