S-93140A358 2-56 x 1/4" 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
- Optical clarity and chemical resistance from clear polycarbonate material for visual inspection and compatibility in sensitive environments
- Precise flush mounting with standard 82° countersink angle and flat head design for seamless surface integration
- Reliable thread engagement through full threading and Class 2A fit ensuring secure fastening in coarse UNC applications
- Wide thermal stability operating from -40° to 210°F for consistent performance across diverse conditions
- Standardized compatibility with ASME B18.6.3 specifications guaranteeing interchangeability and quality assurance
- Environmental compliance with RoHS 3 regulations for safe use in regulated industries
- Tool-friendly installation using standard slotted drive for straightforward assembly and maintenance
Professional Applications & Engineering Value
These clear polycarbonate flat head screws address critical needs in precision assemblies where visibility, corrosion resistance, and electrical insulation are paramount. The fully threaded 2-56 UNC coarse thread design provides maximum grip strength in plastic and soft material applications, while the 82° countersink creates clean, flush surfaces ideal for aesthetic components and airflow-sensitive enclosures. Engineered to maintain dimensional stability across -40° to 210°F temperature ranges, these screws prevent thermal deformation in automotive sensors, medical devices, and electronic housings. The ASME B18.6.3 compliance ensures consistent quality in high-volume manufacturing environments where fastener reliability directly impacts production efficiency.
Specification Summary & Compliance
Manufactured to Class 2A thread fit tolerances with UNC coarse threading (2-56 size) in inch system measurements. Complies with ASME B18.6.3 mechanical standards and RoHS 3 (2015/863/EU) environmental regulations. Features include right-hand thread direction, standard flat head profile, and 1/4" fully threaded length.
