S-94465A125 4-40 x 9/32" Captive Panel Screws

Key Features & Benefits at a Glance

• Enhanced grip and torque application with knurled thumb head design for manual tightening without tools
• Superior corrosion resistance using 430 stainless steel head and 18-8 stainless steel body for harsh industrial environments
• Quick installation and secure fastening with coarse UNC threads and right-hand direction for rapid panel assembly
• Optimized panel compatibility precisely engineered for 0.188" hole diameter and 0.095"-0.156" panel thickness ranges
• Dual-drive versatility featuring both thumb operation and Phillips No. 2 drive for flexible installation options
• Regulatory compliance assurance meeting RoHS 3 standards for environmentally responsible manufacturing
• Durable mechanical performance with 0.281" head diameter providing secure fastening pressure distribution

Professional Applications & Engineering Value

This 4-40 UNC thumb screw delivers critical engineering solutions for captive panel applications in electronic enclosures, industrial control systems, and communication devices. The 430 stainless steel construction provides exceptional corrosion resistance where environmental exposure is a concern, while the knurled head texture ensures positive grip even with gloved hands or in high-vibration environments. The coarse thread profile enables rapid installation and secure retention in panel thicknesses from 0.095" to 0.156", eliminating the need for additional retaining hardware. With dual-operation capability through both thumb and Phillips No. 2 drive, this fastener accommodates various assembly scenarios from field service to production line applications, significantly reducing installation time and tool requirements.

Specification Summary & Compliance

This captive panel screw features precision 4-40 UNC coarse threads with standard Class 2A thread tolerances for consistent engagement. The fastener combines 430 stainless steel head material with 18-8 stainless steel body construction, ensuring mechanical integrity and corrosion resistance. Manufacturing complies with RoHS 3 (2015/863/EU) environmental standards, making it suitable for electronic and industrial applications with regulatory requirements. The screw is engineered for panels with 0.188" diameter holes and accommodates thickness variations from 0.095" to 0.156" with reliable captive performance.