S-95966A663 1/4"-28 x 1 1/2" Captive Panel Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments.
• Precise, secure installation via 3/16" hex drive and knurled head texture, preventing tool slippage and improving assembly efficiency.
• Superior thread engagement and vibration resistance with Class 3A UNF fine threading, maintaining tight tolerances for critical panel applications.
• High mechanical strength offering 70,000 psi tensile strength, suitable for demanding loads and repeated use without failure.
• Optimized for panel retention with partially threaded design, preventing over-insertion and simplifying alignment in captive assemblies.
• Right-hand threading compatibility for standard installation tools and processes, reducing training time and errors.
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries and exports.

Professional Applications & Engineering Value

This 18-8 stainless steel captive panel screw is engineered to address common challenges in industrial assembly, such as vibration loosening and corrosive wear. The Class 3A UNF fine thread provides tighter fit and superior holding power in metal or composite panels, critical for electronics enclosures, machinery guards, and automotive components. The knurled socket head with 3/16" hex drive ensures positive grip during torque application, reducing installation time and tool damage. Its partially threaded shank allows precise depth control, preventing cross-threading in captive panel screw applications where reliability and repeatability are paramount. Ideal for OEMs and maintenance teams requiring consistent, high-strength fastening solutions.

Specification Summary & Compliance

This screw adheres to UNF thread standards with Class 3A fit for high precision, featuring a thread size of 1/4"-28 and length of 1 1/2" (tolerance: -0.04" to 0"). Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material traceability. The 70,000 psi tensile strength and right-hand thread direction align with industrial specifications for reliable performance in panel fastening systems.