S-93140A526 1/4"-20 x 2 1/2" ASME B18.6.3 Plastic Slotted Flat Head Screws
Plastic Slotted Flat Head 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
- Exceptional clarity and corrosion resistance for applications requiring visual inspection or aesthetic appeal without metal corrosion concerns
- Wide temperature tolerance (-40° to 210°F) ensures reliable performance in both extreme cold and moderate heat environments
- Full threading along the 2 1/2" length provides maximum grip and uniform load distribution across the entire fastener
- Standard 82° countersink angle enables flush mounting with standard countersunk holes for clean, professional finishes
- Class 2A thread fit with UNC coarse threading delivers easy installation and reliable engagement in various materials
- Slotted drive compatibility offers straightforward installation with common hand tools while maintaining low profile
- Environmental compliance meets RoHS 3 and REACH standards for use in regulated industries and sensitive applications
Professional Applications & Engineering Value
These clear polycarbonate flat head screws solve critical challenges in applications where metal fasteners would cause galvanic corrosion, interfere with electrical signals, or compromise visual access. The polycarbonate material maintains dimensional stability across the broad -40° to 210°F temperature range, making them ideal for outdoor enclosures, electrical assemblies, and optical equipment. The fully threaded UNC coarse pattern ensures rapid installation and secure holding power in plastics, wood, and soft metals. With their standard 82° countersink angle and slotted drive style, these screws provide reliable flush mounting where appearance and accessibility matter. The combination of chemical resistance and optical clarity makes them particularly valuable in laboratory equipment, display systems, and cleanroom environments where both performance and visibility are essential.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit for consistent dimensional accuracy. Features 1/4"-20 UNC coarse threads with standard 82° countersink angle and right-hand threading. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in industrial and consumer applications worldwide.
