S-95599A136 1/4"-20 x 3/8" Stainless Steel Oversized-Flange Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and reducing replacement frequency.
• High tensile strength of 80,000 psi ensures reliable performance under significant load and vibration, minimizing failure risks.
• Integrated flange design eliminates the need for a separate washer, providing a larger bearing surface and simplifying assembly.
• Hex drive (5/32") allows for high-torque installation with common tools, preventing cam-out and ensuring secure fastening.
• UNC coarse threads with Class 2A fit offer quick assembly and excellent resistance to loosening in coarse-grained materials.
• Fully threaded shank maximizes grip length and adjustability for versatile application across various material thicknesses.
• RoHS 3 and REACH compliance guarantees environmental safety and regulatory adherence for global industrial use.

Professional Applications & Engineering Value

This flanged rounded head screw is engineered to address common industrial challenges such as vibration-induced loosening and corrosion in demanding environments. The 18-8 stainless steel material provides excellent resistance to rust and oxidation, making it suitable for outdoor equipment, marine applications, and chemical processing machinery. The UNC coarse thread and Class 2A fit ensure rapid, secure installation in metals and plastics, reducing assembly time while maintaining joint integrity. The integrated flange distributes clamping force evenly, preventing surface damage and enhancing seal effectiveness in enclosures or panels. Ideal for industrial assembly, automotive components, and electronic housings, this screw delivers long-term reliability and reduces maintenance costs.

Specification Summary & Compliance

This screw features precise UNC coarse threads with Class 2A fit, ensuring consistent dimensional accuracy and ease of assembly. It adheres to standard inch measurements, with a thread size of 1/4"-20 and length of 3/8". Manufacturing complies with industry specifications for hex drive and rounded button head profiles. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for various industrial and commercial applications.