S-92800A201 1/4"-20 x 4 3/8" 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
• High tensile strength of 80,000 PSI ensures reliable performance under heavy loads and vibration
• Coarse UNC threading provides faster installation and reduced cross-threading risk in demanding applications
• Rockwell B70 hardness delivers superior durability and wear resistance for long service life
• Partial threading design allows for precise clamping force control and secure joint assembly
• Class 2A thread fit guarantees consistent, reliable engagement with standard nuts and tapped holes
• External hex drive enables high-torque installation with common tools for efficient maintenance

Professional Applications & Engineering Value

This 18-8 Stainless Steel hex head screw addresses critical industrial fastening challenges where corrosion resistance and high tensile strength are paramount. The 1/4"-20 UNC coarse thread configuration ensures rapid assembly in structural applications, machinery, and equipment manufacturing, while the partial threading design provides optimal stress distribution across joined components. Engineered with Rockwell B70 hardness, it maintains integrity in high-vibration environments common in automotive, construction, and marine industries. The external hex drive accommodates standard wrenches for secure installation in confined spaces, making it an essential heavy-duty fastener for professionals requiring dependable, long-lasting connections.

Specification Summary & Compliance

This hex head screw features precise Class 2A thread fit per UNC standards with dimensions of 1/4"-20 thread size and 4 3/8" length. Manufactured from 18-8 Stainless Steel with 80,000 PSI tensile strength and Rockwell B70 hardness, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.