S-98885A131 1/4"-20 x 1 1/2" 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 extreme environments from -50°F to 500°F
- High tensile strength of 25,000 psi provides durable fastening in demanding industrial applications
- UL 94 V-0 flammability rating ensures superior fire safety in electrical and high-temperature settings
- Chemical and corrosion resistance of PEEK plastic maintains integrity in harsh chemical environments
- Precision Class 2A thread fit guarantees consistent engagement and secure fastening assembly
- Standard hex drive design enables easy installation with common tools while preventing stripping
- Comprehensive compliance with ASME B18.3, RoHS 3, and REACH standards for quality assurance
Professional Applications & Engineering Value
These PEEK plastic socket head cap screws deliver critical performance advantages in challenging industrial environments where metal fasteners would fail. The beige PEEK material provides excellent resistance to chemicals, steam, and radiation while maintaining dimensional stability across the full -50° to 500°F temperature range. The 1/4"-20 UNC coarse threading with Class 2A fit ensures reliable engagement in plastic and composite materials, preventing cross-threading during assembly. These screws are particularly valuable in semiconductor manufacturing, aerospace components, medical equipment, and chemical processing systems where non-conductive, non-magnetic properties are essential. The hex drive socket head design allows for high torque application without cam-out, making them ideal for confined spaces in precision equipment.
Specification Summary & Compliance
This 1/4"-20 UNC socket head cap screw features precise Class 2A thread tolerances and 1 1/2" length with full threading. Manufactured to ASME B18.3 specifications for dimensional consistency and performance reliability. The product complies with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety. Additional certification includes UL 94 V-0 flammability rating for enhanced fire safety in electrical applications.
