S-92929A133 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-term reliability in humid or chemically exposed environments without rust or degradation.
- Excellent electrical insulation properties prevent short circuits and enhance safety in electronic assemblies.
- Lightweight nylon construction reduces overall assembly weight while maintaining durability and impact resistance.
- 100° countersink angle design allows for flush mounting, minimizing protrusion and improving aesthetic finish.
- Wide operating temperature range (-40° to 185°F) maintains performance stability in both extreme cold and moderate heat conditions.
- Class 2A thread fit with UNC coarse threading provides easy installation and secure holding power in plastic or soft materials.
- Full threading along the 3/8" length offers consistent grip and adjustable fastening depth for versatile applications.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these nylon plastic flat head screws address critical challenges like galvanic corrosion and electrical hazards. The non-conductive material eliminates risk in PCB mounting, control panels, and marine equipment, while the slotted drive ensures compatibility with standard tools for quick maintenance. With a 100° countersink and UNC coarse threads, they deliver vibration resistance and seamless integration into thermoplastic assemblies, reducing part failure in automotive, aerospace, and consumer electronics. Their RoHS 3 compliance further supports sustainable manufacturing without compromising on ASME B18.6.3 mechanical standards.
Specification Summary & Compliance
This screw adheres to Class 2A thread fit tolerances per unified inch standards, with 4-40 UNC coarse threads ensuring precise engagement. Manufacturing follows ASME B18.6.3 specifications for dimensional consistency, and the product is fully RoHS 3 (2015/863/EU) compliant, guaranteeing absence of hazardous substances. The flat head profile and 100° countersink angle meet industry norms for flush installation, backed by a operational range of -40° to 185°F.
