S-90600A625 1/4"-20 x 1/4" ASME B18.3, ASTM F879 Stainless Steel Button Head Torx Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel and passivated finish, ideal for harsh industrial environments
• Enhanced torque transmission and reduced cam-out thanks to the T27 Torx drive design
• Reliable, high-strength fastening with a tensile strength of 60,000 psi for demanding applications
• Precise, secure thread engagement ensured by the Class 3A thread fit and UNC coarse threading
• Streamlined, low-profile installation with a rounded button head that minimizes snagging
• Full-length threading for maximum grip and holding power across the entire fastener length
• Compliance with major industrial standards including ASME B18.3, ensuring quality and interchangeability

Professional Applications & Engineering Value

This 1/4"-20 UNC T27 Torx Button Head Screw is engineered for precision and durability in demanding industrial applications. The 18-8 Stainless Steel construction, combined with a passivated finish, provides excellent resistance to corrosion, oxidation, and chemical exposure, making it suitable for machinery, electronics, and outdoor equipment. The T27 Torx drive offers superior torque transfer compared to traditional drives, reducing the risk of tool slippage and head stripping, which is critical in automated or high-torque assembly processes. The rounded button head provides a sleek, low-profile finish that is both aesthetically pleasing and functional, preventing snagging in tight spaces. With its Class 3A thread fit and coarse UNC threading, this screw ensures quick installation and reliable performance in materials where vibration resistance is essential, solving common issues of loosening and thread wear.

Specification Summary & Compliance

This fastener features a 1/4"-20 UNC thread with a Class 3A fit for precise dimensional accuracy and secure fastening. It is manufactured in compliance with ASME B18.3 specifications, ensuring consistent quality and interchangeability. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory standards, confirming it is free from hazardous substances and safe for various industrial and consumer applications.