S-95966A135 4-40 x 7/16" Captive Panel Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional thread reliability with Class 3A precision fit, ensuring secure fastening and vibration resistance
• High tensile strength of 70,000 psi provides robust load-bearing capacity for demanding panel applications
• Secure installation and removal with 3/32" hex drive socket head and knurled texture for enhanced grip
• Optimized panel retention through partial threading design, preventing complete disassembly during maintenance
• Wide compatibility with 4-40 UNC coarse thread standard, suitable for various industrial equipment
• Environmental compliance meeting RoHS 3 and REACH regulations for global manufacturing requirements

Professional Applications & Engineering Value

This 18-8 stainless steel captive panel screw delivers critical engineering advantages in industrial assembly. The Class 3A thread fit maintains precise tolerances for vibration-resistant connections in electronic enclosures, control panels, and machinery housings. The partially threaded design prevents complete screw removal, eliminating lost hardware during field service while the knurled head texture provides superior tool grip in confined spaces. With 70,000 psi tensile strength and corrosion-resistant properties, this 4-40 UNC coarse thread screw ensures long-term reliability in demanding environments where frequent panel access is required, reducing maintenance downtime and replacement costs.

Specification Summary & Compliance

Manufactured to UNC thread standards with Class 3A thread fit precision, this captive panel screw maintains dimensional accuracy with length tolerance of -0.03" to 0". The inch system measurement ensures compatibility with North American equipment specifications. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental safety standards for global industrial applications.