S-92929A132 4-40 x 3/8" 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
- Superior corrosion resistance ensures long-lasting performance in harsh environments without rust or degradation.
- Excellent electrical insulation properties prevent electrical conductivity, making them ideal for electronic and electrical assemblies.
- Wide operating temperature range from -40° to 185°F maintains integrity in both extreme cold and moderate heat conditions.
- Standard 82° countersink angle provides a flush, low-profile finish for smooth surfaces and reduced snagging risks.
- Class 2A thread fit with UNC coarse threading offers easy installation and reliable holding power in plastic and soft materials.
- Fully threaded design maximizes grip and load distribution along the entire length for secure fastening.
- Compliance with ASME B18.6.3 and RoHS 3 guarantees consistent quality, safety, and environmental standards.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 4-40 UNC nylon plastic flat head slotted screws address common challenges like galvanic corrosion and electrical short circuits. The nylon plastic material inherently resists moisture, chemicals, and UV exposure, eliminating the need for additional coatings. With a standard 82° countersink angle and flat head design, they sit flush in pre-drilled holes, reducing aerodynamic drag in enclosures and improving aesthetics. Ideal for electrical insulation applications, they securely fasten components in control panels, telecommunications equipment, and automotive electronics, while the coarse UNC threads ensure quick assembly and vibration resistance in plastic housings.
Specification Summary & Compliance
This screw adheres to precise dimensional standards, including a Class 2A thread fit for consistent engagement and UNC coarse threading (4-40 size) with a thread diameter of 0.112". Manufactured in compliance with ASME B18.6.3 for mechanical reliability and RoHS 3 (2015/863/EU) for environmental safety, it is fully threaded and operates within a temperature range of -40° to 185°F, ensuring performance in varied conditions.
