S-94350A180 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
Installation & Application
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Key Features & Benefits at a Glance
- Secure panel retention with captive design that prevents complete removal and loss during maintenance
- Superior corrosion resistance thanks to 18-8 stainless steel construction for long-lasting performance in harsh environments
- Easy installation and removal with slotted flat head design compatible with standard screwdrivers
- Optimized thread engagement through partial threading that ensures proper panel clamping without over-tightening
- Reliable coarse threading (UNC 4-40) that resists vibration loosening in industrial applications
- Precise dimensional compatibility with 0.257" panel holes and 0.05" minimum panel thickness requirements
- Environmental compliance assurance meeting RoHS 3 and REACH regulations for global market acceptance
Professional Applications & Engineering Value
This 4-40 UNC captive panel screw addresses critical challenges in industrial assembly where panel security and accessibility must coexist. The 18-8 stainless steel construction provides exceptional corrosion resistance, making it ideal for electronics enclosures, control panels, and outdoor equipment exposed to moisture and chemicals. The partially threaded design with coarse UNC threading ensures reliable engagement while preventing cross-threading during repeated panel removals. With precise dimensions matching 0.257" panel holes, this slotted flat head fastener delivers consistent performance in captive screw assemblies where tool accessibility and vibration resistance are paramount for maintenance-intensive applications.
Specification Summary & Compliance
This captive panel screw features UNC coarse threading (4-40) with standard Class 2A thread tolerances for reliable fit. The partial threading extends 5/32" from a 5/16" overall length, while the flat head design (0.281" diameter) ensures flush mounting. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, this fastener meets international standards for industrial applications requiring corrosion-resistant and environmentally compliant components.
