S-95966A145 4-40 x 5/8" Captive Panel Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
• High tensile strength of 70,000 psi ensures reliable performance under mechanical stress
• Precise Class 3A thread fit provides secure, vibration-resistant connections in panel assemblies
• Knurled head texture offers enhanced grip for easier manual installation and removal
• Partially threaded design allows for controlled engagement depth in electronic enclosures
• RoHS 3 and REACH compliance guarantees environmental safety and regulatory acceptance
• Hex socket drive with 3/32" size enables efficient tool engagement and torque application

Professional Applications & Engineering Value

This 18-8 Stainless Steel captive panel screw with 4-40 UNC coarse threading is engineered to solve critical challenges in electronic and industrial panel assemblies. The corrosion-resistant material prevents degradation in humid or chemically aggressive environments, while the Class 3A thread fit maintains tight tolerances to resist loosening from vibration. The partially threaded shank ensures precise alignment and prevents over-insertion in sensitive equipment. With its knurled head and hex socket drive, installation becomes faster and more reliable, reducing assembly time in high-volume production lines for telecommunications, control systems, and machinery panels.

Specification Summary & Compliance

This captive panel screw features 4-40 UNC coarse threads with Class 3A fit for high precision, a length of 5/8" with tolerance from -0.03" to 0, and partial threading for controlled fastening. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial suitability.