S-93190A283 1/4"-20 x 4 1/4" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life.
• High tensile strength of 70,000 PSI ensures reliable load-bearing capacity and reduces the risk of fastener failure under stress.
• Rockwell B70 hardness provides excellent durability and resistance to wear, maintaining integrity in repetitive applications.
• Coarse UNC threads with Class 2A fit offer quick assembly, reduced cross-threading, and consistent performance in various materials.
• External hex drive design allows for easy installation and removal with standard tools, improving workflow efficiency.
• Partial threading enables precise clamping control, minimizing vibration loosening in dynamic industrial settings.
• Compliance with ASME B18.2.1, RoHS 3, and REACH ensures adherence to industry standards and environmental safety regulations.

Professional Applications & Engineering Value

This 1/4"-20 UNC hex head screw in 316 stainless steel is engineered to address common industrial challenges, such as corrosion in marine, chemical, or outdoor settings. The coarse thread design and Class 2A thread fit provide reliable engagement in softer materials or where vibration resistance is critical, reducing maintenance downtime. With a partially threaded shank, it offers optimal grip length for secure fastening in structural assemblies, machinery, and equipment. The external hex drive ensures compatibility with standard wrenches, streamlining installation in tight spaces. Ideal for heavy-duty industrial applications, this fastener delivers consistent performance, backed by 70,000 PSI tensile strength and compliance with key standards, making it a trusted choice for engineers and procurement specialists.

Specification Summary & Compliance

This product features precise Class 2A thread fit per UNC standards, ensuring dimensional accuracy and interchangeability. It meets ASME B18.2.1 specifications for hex head screws and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental adherence. The 4 1/4" length and partial threading provide versatility for various industrial fastening needs.