S-91783A554 1/4"-20 x 3" ASME B18.6.3 Stainless Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance thanks to 18-8 Stainless Steel construction and a passivated finish, ideal for harsh industrial environments.
• Reliable high-strength performance with a tensile strength of 100,000 psi and Rockwell B100 hardness for demanding applications.
• Optimized for quick assembly featuring UNC coarse threading and a Class 2A thread fit for easy starting and secure fastening.
• Versatile partial threading allows for precise clamping force control and is suitable for a wide range of material thicknesses.
• Durable and user-friendly design with a rounded head and slotted drive for reduced risk of snagging and straightforward installation.
• Guaranteed compliance and quality, meeting ASME B18.6.3 standards and environmental regulations like RoHS 3 and REACH.
• Long-term cost efficiency due to the material's durability and the passivated finish, minimizing replacement needs and maintenance.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial fastening, this 1/4"-20 x 3" rounded head slotted screw addresses critical challenges in assembly and maintenance. Its 18-8 Stainless Steel material, combined with a passivated finish, provides superior resistance to corrosion and oxidation, making it ideal for applications in marine, chemical processing, and outdoor equipment where environmental factors are a concern. The UNC coarse thread and Class 2A fit ensure quick, reliable engagement in various materials, reducing installation time and preventing cross-threading. The partially threaded design allows for effective use in scenarios requiring adjustable clamping, such as in machinery frames or structural supports, enhancing versatility and load distribution. This screw is a trusted solution for engineers seeking durability, compliance, and performance in industrial fasteners.

Specification Summary & Compliance

This screw adheres to precise dimensional standards with a Class 2A thread fit and UNC coarse threading (1/4"-20), ensuring consistent performance and interchangeability. It is manufactured in accordance with ASME B18.6.3 specifications, guaranteeing reliability in mechanical and structural applications. Additionally, the product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for global supply chains.