S-91997A195 6-32 x 1/4" ASME B18.3 Sealing Tamper-Resistant Torx Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Superior tamper resistance with Torx T10 drive for enhanced security in sensitive applications, deterring unauthorized access.
• Reliable sealing performance with integrated Buna-N rubber O-ring, ensuring leak-proof integrity under pressures up to 1500 psi.
• Excellent corrosion resistance due to 18-8 stainless steel construction and passivated finish, extending service life in harsh environments.
• High tensile strength of 70,000 psi and Rockwell B70 hardness for durable, long-lasting fastening in demanding industrial settings.
• Wide temperature tolerance from -40° to 225° F, maintaining seal and mechanical properties in extreme thermal conditions.
• Precise Class 3A thread fit with UNC coarse threading for easy installation and secure, vibration-resistant connections.
• Full threading and rounded button head design for smooth engagement and a low-profile, aesthetically clean finish.

Professional Applications & Engineering Value

This 6-32 x 1/4" tamper-resistant Torx screw is engineered to address critical challenges in security and sealing applications. The 18-8 stainless steel material, combined with a passivated finish, provides robust resistance to corrosion and wear, ideal for outdoor, marine, or chemical-exposed environments. The Buna-N rubber O-ring ensures effective sealing against fluids and dust, supporting operations in HVAC, automotive, and electronic enclosures where pressure integrity up to 1500 psi is essential. With a T10 drive style, it offers tamper-proof security, reducing the risk of vandalism in public infrastructure or sensitive equipment. The fully threaded design and UNC coarse threads facilitate quick assembly and reliable hold, minimizing downtime in production lines. These features make it a trusted choice for engineers seeking durable, compliant fasteners that enhance safety and longevity in security screw and sealing screw applications.

Specification Summary & Compliance

This screw adheres to Class 3A thread fit for high precision in UNC coarse threading, ensuring consistent performance in inch-based systems. It meets ASME B18.3 specifications for dimensional accuracy and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental standards for global industrial use.