S-90283A105 4-40 x 3/16" ASME B18.6.3 Steel Pan Head Slotted Screws
Steel Pan Head Slotted 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
- Enhanced corrosion resistance through zinc plating for reliable performance in various industrial environments
- Superior holding power with 60,000 psi tensile strength and Rockwell B60 hardness for demanding applications
- Quick installation and removal with standard slotted drive design for easy tool compatibility
- Optimized thread engagement through Class 2A thread fit and coarse UNC threading for secure fastening
- Full-threaded design ensures maximum grip along the entire 3/16" length for consistent performance
- Compliant with industry standards including ASME B18.6.3 for reliable dimensional accuracy
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance for sustainable sourcing
Professional Applications & Engineering Value
These 4-40 UNC zinc-plated steel pan head slotted screws deliver exceptional engineering value across industrial applications where corrosion resistance and high tensile strength are critical. The zinc-plated steel construction provides durable protection against environmental factors, while the coarse UNC threading ensures rapid installation and superior holding power in materials prone to stripping. The rounded pan head profile with slotted drive offers reliable fastening in confined spaces, making these screws ideal for electronic enclosures, machinery assemblies, and automotive components. With fully threaded design and Class 2A thread fit, these fasteners maintain consistent clamping force while meeting rigorous industrial fastener standards for precision and reliability.
Specification Summary & Compliance
These screws feature Class 2A thread fit with UNC coarse threading (4-40 size) and comply with ASME B18.6.3 dimensional standards. The manufacturing process adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring compliance with international substance restrictions. The 0.219" head diameter and 3/16" length maintain precise dimensional accuracy for consistent performance across industrial applications.
