S-95966A641 2-56 x 1/4" Captive Panel Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional tensile strength of 70,000 psi ensures reliable, vibration-resistant fastening in demanding applications
• Precision Class 3A thread fit provides consistent engagement and reduces the risk of cross-threading during assembly
• Secure captive panel retention through partial threading design, preventing screw loss in electronic and machinery panels
• Easy installation and removal with 5/64" hex socket drive, allowing high torque application in confined spaces
• Coarse UNC threading enables quick assembly and superior holding power in various panel materials
• Full regulatory compliance with RoHS 3 and REACH standards for global industrial and electronic applications

Professional Applications & Engineering Value

This 2-56 UNC captive panel screw delivers critical engineering solutions for industrial equipment and electronic enclosures where vibration resistance and corrosion protection are paramount. The 18-8 stainless steel composition withstands corrosive environments while maintaining structural integrity, eliminating premature fastener failure. The partial threading design ensures screws remain captive in panels during service and maintenance, significantly reducing downtime in production environments. With Class 3A thread fit precision and coarse UNC threading, these screws provide rapid installation and reliable performance in panel fastening applications across telecommunications, industrial controls, and electronic assemblies. The socket head design with hex drive accommodates high torque requirements in space-constrained applications, making them ideal for precision engineering assemblies requiring repeated access.

Specification Summary & Compliance

This captive panel screw maintains Class 3A thread fit tolerance for precision engagement, manufactured to UNC coarse thread standards with 2-56 thread size and right-hand threading. The 1/4" length features a tight tolerance of -0.03" to 0" for consistent panel mounting. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety for global industrial applications. The partially threaded design with 1/8" thread length provides optimal captive performance while maintaining 70,000 psi tensile strength for demanding mechanical fastening requirements.