S-95966A121 4-40 x 1/4" 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 rated at 70,000 psi, providing secure fastening under high-stress conditions.
- Precise Class 3A thread fit for tighter tolerances and reduced risk of cross-threading during installation.
- Knurled head texture enhances grip and handling, facilitating quicker assembly and reducing tool slippage.
- Partially threaded shank allows for controlled clamping force and improved alignment in panel applications.
- 3/32" hex drive socket enables efficient torque transmission with standard tools, minimizing installation time.
- Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets global industry standards.
Professional Applications & Engineering Value
This 4-40 UNC threaded captive panel screw is engineered to address common challenges in panel mounting and industrial assembly. The 18-8 stainless steel material offers excellent resistance to corrosion and oxidation, making it ideal for electronics, machinery, and outdoor equipment where durability is critical. The coarse thread spacing and Class 3A fit ensure rapid, secure engagement with mating components, reducing assembly errors and maintenance needs. The knurled head and hex drive design provide reliable tool engagement, even in confined spaces, enhancing productivity for B2B users in manufacturing, aerospace, and telecommunications sectors.
Specification Summary & Compliance
This screw adheres to UNC thread standards with a Class 3A fit for precision threading and dimensional accuracy. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. The inch system measurements, including thread diameter of 0.112" and length of 1/4" with a tolerance of -0.03" to 0", guarantee consistent performance in captive panel screw applications.
