S-95966A645 4-40 x 7/8" 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, ideal for harsh industrial environments
- Precise Class 3A thread fit ensures secure, vibration-resistant connections in critical assemblies
- High tensile strength of 70,000 psi provides reliable performance under mechanical stress
- Knurled head design offers enhanced grip for easy manual installation and removal
- Partially threaded shank allows for optimal clamping force distribution in panel applications
- 3/32" hex drive compatibility enables efficient installation with standard tools
- Environmental compliance with RoHS 3 and REACH regulations for safe usage in electronic equipment
Professional Applications & Engineering Value
This 18-8 stainless steel captive panel screw delivers exceptional engineering value in electronic enclosures, industrial control panels, and communication equipment where vibration resistance and corrosion protection are critical. The 4-40 UNC coarse threading with Class 3A precision fit prevents loosening under dynamic loads, while the partially threaded design concentrates clamping force precisely where needed. The knurled head texture combined with 3/32" hex drive accommodates both tool-assisted and manual operations, making it ideal for maintenance-intensive applications. These features collectively address common challenges of panel fastening systems, including thermal cycling stress, environmental exposure, and accessibility requirements in confined spaces.
Specification Summary & Compliance
Manufactured to exacting standards, this captive panel screw features 4-40 UNC coarse threads with Class 3A fit tolerance for precision alignment. The 7/8" length maintains tight dimensional control with a length tolerance of -0.03" to 0". Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage in global markets. The inch system measurements and right-hand thread direction conform to North American industrial standards for seamless integration with existing equipment and components.
