S-90910A710 4-40 x 3/16" ASME B18.3 Stainless Steel Button Head Torx Plus Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel and passivated finish, ideal for harsh environments.
• Enhanced torque transfer and reduced cam-out using Torx Plus IP8 drive for reliable, efficient assembly.
• High tensile strength of 60,000 psi ensures secure fastening in demanding applications.
• Precise Class 2A thread fit guarantees consistent engagement and reduced risk of cross-threading.
• Compact 3/16" length with fully threaded design provides maximum holding power in tight spaces.
• Durable Rockwell B55 hardness maintains structural integrity under repeated use.
• Rounded button head profile offers a low-profile, aesthetically pleasing finish with reduced snagging.

Professional Applications & Engineering Value

These 4-40 UNC Torx Plus Rounded Head Screws are engineered to address critical assembly challenges in industrial settings. The 18-8 Stainless Steel construction, combined with a passivated finish, provides excellent resistance to corrosion and oxidation, making them suitable for electronics, medical devices, and outdoor equipment. The Torx Plus IP8 drive minimizes tool slippage and cam-out, ensuring precise torque application and reducing assembly errors. With a coarse UNC thread and fully threaded design, they offer quick installation and strong retention in materials where vibration resistance is crucial. Ideal for precision fastening in compact assemblies, these screws enhance productivity while meeting stringent industry standards.

Specification Summary & Compliance

This screw features a 4-40 UNC thread with Class 2A fit for dimensional accuracy and smooth engagement. It complies with ASME B18.3 manufacturing specifications, ensuring consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for industrial use.