S-91790A544 1/4"-20 x 1 1/4" ASME B18.6.3 Stainless Steel Slotted Oval Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh industrial environments.
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibrations.
• Rockwell B80 hardness provides excellent durability and resistance to wear over time.
• UNC coarse threading with Class 2A fit allows for quick, easy installation and secure fastening in various materials.
• Fully threaded design offers consistent grip along the entire length for enhanced holding power.
• Oval head with slotted drive combines a neat, finished appearance with straightforward tool engagement.
• Compliance with ASME B18.6.3, RoHS, and REACH guarantees quality, safety, and environmental standards are met.

Professional Applications & Engineering Value

This 1/4"-20 x 1-1/4" 18-8 stainless steel oval head slotted screw is engineered to address common industrial challenges, such as corrosion in humid or chemical-exposed settings. The passivated finish enhances the inherent rust resistance of 18-8 stainless steel, making it suitable for outdoor equipment, marine applications, and food processing machinery. Its UNC coarse threads and Class 2A fit ensure rapid assembly and reduced cross-threading risks, while the oval head profile provides a flush, aesthetically pleasing finish that minimizes snagging. With a tensile strength of 80,000 psi and full threading, it delivers secure, long-term fastening in structural assemblies, automotive components, and heavy-duty enclosures, supporting efficient maintenance and reliability in demanding B2B environments.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including Class 2A thread fit for consistent engagement and UNC coarse threading (1/4"-20) per industry norms. It meets ASME B18.6.3 specifications for mechanical and dimensional integrity, ensuring interchangeability and performance. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting sustainable procurement practices.