S-95635A373 8-32 x 1/4" ASME B18.3 Tamper-Resistant Hex-Drive Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments and long-term reliability.
• Enhanced security and tamper-resistance via the specialized hex drive, preventing unauthorized removal in sensitive or public-facing applications.
• High mechanical strength and durability with a tensile strength of 70,000 psi and Rockwell B70 hardness, ensuring the screw withstands high stress and vibration.
• Precise and reliable thread engagement due to the Class 3A thread fit and UNC coarse thread, providing secure fastening and reducing the risk of cross-threading.
• Full threading for maximum grip along the entire 1/4" length, offering superior holding power in a wide range of material thicknesses.
• Compliance with industry standards including ASME B18.3, ensuring dimensional accuracy, interchangeability, and performance in professional applications.
• Environmental and safety compliance with RoHS 3 and REACH regulations, making them safe for use in regulated industries and global markets.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 8-32 UNC thread rounded head screws provide a robust fastening solution where security and durability are paramount. The 18-8 stainless steel material combined with a passivated finish offers excellent resistance to oxidation and chemical exposure, making them suitable for outdoor equipment, marine hardware, and food processing machinery. The tamper-resistant hex drive is critical in public infrastructure, electrical enclosures, and transportation systems to prevent vandalism and unauthorized access. With a coarse thread spacing and Class 3A thread fit, these screws ensure quick installation and reliable performance in metals and plastics, reducing assembly time and maintenance costs. Their fully threaded design and high tensile strength make them ideal for heavy-duty applications, from machinery assembly to structural supports, where vibration resistance and long-term integrity are essential.

Specification Summary & Compliance

This screw features precision UNC coarse threads with a Class 3A thread fit for tight tolerances and secure fastening. It adheres to the ASME B18.3 standard for dimensional consistency and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for industrial and consumer applications.