S-95966A125 4-40 x 5/16" Captive Panel Screws
Captive Panel Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments.
- Exceptional tensile strength of 70,000 psi provides reliable fastening under high-stress conditions, reducing failure risks.
- Class 3A thread fit delivers precise, secure engagement for vibration-resistant assemblies in panel applications.
- Knurled socket head with 3/32" hex drive offers enhanced grip and slip-resistant torque application during installation.
- Partially threaded UNC coarse thread design allows for faster installation and optimal clamping force in captive panel systems.
- Compliance with RoHS 3 and REACH regulations ensures environmental safety and global supply chain acceptance.
- Right-hand coarse threading facilitates quick, straightforward assembly in high-volume production settings.
Professional Applications & Engineering Value
This 4-40 UNC captive panel screw is engineered to address common challenges in industrial assembly, such as panel misalignment and vibration-induced loosening. The 18-8 stainless steel material provides excellent resistance to oxidation and chemical exposure, making it ideal for electronics enclosures, machinery panels, and outdoor equipment. The knurled socket head enhances tool engagement, reducing cam-out during high-torque applications, while the partially threaded shank ensures precise panel retention without over-tightening. With its coarse UNC thread and Class 3A fit, this screw delivers consistent performance in automated assembly lines, minimizing downtime and maintenance costs.
Specification Summary & Compliance
This screw adheres to UNC thread standards with a Class 3A thread fit for high precision. Dimensions include a 5/16" length with a tolerance of -0.03" to 0", 3/32" hex drive, and knurled head texture. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial use.
