S-91221A184 1/4"-20 x 3/4" UL 94 HB 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 chemical and corrosion resistance due to glass-filled nylon construction, ideal for harsh industrial environments
- Reliable performance across a wide temperature range from -20°F to 230°F, ensuring stability in varying operational conditions
- Secure and tamper-resistant fastening with a standard socket head and 3/16" hex drive for precise installation and removal
- Optimized for quick assembly featuring 1/4"-20 UNC coarse threads and Class 2A fit for easy starting and consistent engagement
- Lightweight yet durable alternative to metal, reducing component weight without sacrificing strength in non-structural applications
- Compliance with major safety and environmental standards including UL 94 HB, RoHS 3, and REACH for assured quality and regulatory acceptance
- Fully threaded design provides maximum grip and adjustability along the entire 3/4" length for versatile mounting needs
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these glass-filled nylon socket head cap screws solve critical challenges where metal fasteners fall short. The black plastic material inherently resists corrosion, electrolysis, and electrical conductivity, making them perfect for electrical enclosures, chemical processing equipment, and marine applications. The UNC coarse thread and Class 2A thread fit ensure rapid installation and vibration resistance, reducing assembly time and maintenance. With a temperature range of -20°F to 230°F, they maintain integrity in both freezing and elevated heat environments, providing a reliable, non-magnetic, and lightweight fastening solution for OEMs and MRO professionals.
Specification Summary & Compliance
This socket head cap screw adheres to precise dimensional standards with a 1/4"-20 UNC coarse thread and Class 2A thread fit for consistent interchangeability. It is manufactured to meet UL 94 HB flammability requirements and is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental safety and regulatory acceptance in global markets.
