S-90193A126 1/4"-20 x 3/4" ASME B18.6.3 Stainless Steel Flanged Hex Head Screws with Slotted Drive

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and chemical exposure
• High tensile strength of 100,000 psi ensures reliable load-bearing capacity and joint integrity under stress
• Flanged head design provides a larger bearing surface, distributing clamp load and eliminating the need for separate washers
• External hex/slotted drive offers versatile installation options with standard hand or power tools for efficient assembly
• Coarse UNC threads with Class 2A fit enable quick, easy engagement and reduced risk of cross-threading
• Full threading along the 3/4" length allows for maximum adjustability and secure fastening in a wide range of material thicknesses
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees consistent quality, safety, and environmental responsibility

Professional Applications & Engineering Value

This 1/4-20 UNC hex head screw is engineered to solve critical fastening challenges in demanding industrial applications. The 316 Stainless Steel material provides exceptional resistance to corrosion from saltwater, chemicals, and extreme temperatures, making it a top choice for marine equipment, chemical processing plants, and outdoor infrastructure. The combination of a flanged head and coarse UNC thread ensures rapid installation and vibration resistance, reducing assembly time and maintenance needs in machinery, structural frames, and transportation systems. Its 100,000 psi tensile strength and Rockwell B100 hardness deliver dependable performance under high-stress conditions, preventing fastener failure and ensuring long-term operational safety.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with a Class 2A thread fit for standard tolerance and easy assembly. It is manufactured in accordance with ASME B18.6.3 specifications, ensuring dimensional accuracy and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and safe for various industrial and commercial uses.