S-98885A123 1/4"-20 x 3/8" 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 performance with reliable operation from -50° to 500° F, ideal for extreme temperature environments
- High tensile strength of 25,000 psi ensures durable fastening in demanding mechanical applications
- Superior chemical resistance thanks to PEEK plastic construction, preventing degradation in harsh conditions
- Precise Class 2A thread fit with 1/4"-20 UNC coarse threads for easy installation and secure engagement
- Enhanced safety compliance with UL 94 V-0 flame rating, reducing fire hazards in electrical and industrial settings
- Environmentally responsible design meeting RoHS 3 and REACH regulations for global market acceptance
- Optimized hex drive design with 3/16" drive size providing secure tool engagement and reduced stripping risk
Professional Applications & Engineering Value
This PEEK plastic socket head cap screw delivers critical engineering advantages in challenging environments where metal fasteners fail. The 1/4"-20 UNC coarse thread configuration with Class 2A fit ensures reliable installation in plastic and composite materials without cracking or stress concentration. The beige PEEK material maintains dimensional stability across the -50° to 500° F temperature range, solving thermal expansion mismatch issues in aerospace, automotive, and chemical processing equipment. With 25,000 psi tensile strength and chemical inertness, these socket head cap screws prevent galvanic corrosion in mixed-material assemblies while providing UL 94 V-0 flame resistance for electrical enclosures and safety-critical components.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 2A thread fit tolerance for consistent performance. Features 1/4"-20 UNC coarse threads with right-hand direction and fully threaded design. Compliant with UL 94 V-0 flame rating, RoHS 3 (2015/863/EU), and REACH (EC 1907/2006) environmental standards for global regulatory acceptance.
