S-98885A129 1/4"-20 x 1 1/4" ASME B18.3, UL 94 V-0 Plastic Socket Head Screws
Plastic Socket 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 thermal stability for reliable performance in temperatures from -50°F to 500°F, preventing failure in extreme environments
- High tensile strength of 25,000 psi ensures secure fastening under mechanical stress without compromising integrity
- Chemical and corrosion resistance from PEEK plastic material, ideal for harsh industrial and chemical processing applications
- Electrical insulation properties reduce risks of short circuits and enhance safety in electrical assemblies
- Precise UNC coarse threading with Class 2A fit provides easy installation and consistent engagement in various materials
- Flame-retardant UL 94 V-0 rating improves fire safety in sensitive or high-risk settings
- Hex socket drive design allows for high-torque application with standard tools, minimizing slippage and damage
Professional Applications & Engineering Value
Engineered for demanding sectors, this PEEK plastic socket head cap screw addresses critical challenges in high-temperature, chemically aggressive, and electrically sensitive environments. Its beige PEEK material offers inherent resistance to degradation from fuels, acids, and steam, making it suitable for aerospace, automotive, and chemical processing equipment. The 1/4"-20 UNC coarse thread and Class 2A fit ensure quick, reliable assembly with reduced risk of cross-threading, while the hex drive accommodates precise torque control. Ideal for applications requiring electrical insulation and compliance with stringent safety standards, it eliminates galvanic corrosion risks and supports long-term durability in industrial machinery, electronic enclosures, and medical devices.
Specification Summary & Compliance
This screw adheres to ASME B18.3 specifications, with precise UNC coarse threading and Class 2A thread fit for consistent dimensional accuracy. It is fully compliant with RoHS 3 (2015/863/EU), REACH (EC 1907/2006), and carries a UL 94 V-0 flame retardancy rating, ensuring environmental safety and regulatory acceptance in global markets.
