S-92800A208 1/4"-28 x 4 1/2" 18-8 Stainless Steel Hex Head Screws
18-8 Stainless Steel Hex 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
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
- High mechanical strength offering 80,000 psi tensile strength and Rockwell B70 hardness for reliable, heavy-duty fastening under stress.
- Precise thread engagement with Class 2A thread fit and UNF fine thread design, ensuring secure, vibration-resistant connections.
- Easy installation and removal thanks to the external hex drive and standard right-hand threading, compatible with common tools.
- Optimized thread distribution with a partially threaded shank and minimum 3/4" thread length, providing strong grip where needed.
- Environmental compliance meeting RoHS 3 and REACH standards, ensuring safe use in regulated industries.
- Durable performance in varied temperatures and conditions, reducing replacement frequency and maintenance costs.
Professional Applications & Engineering Value
This 1/4"-28 UNF hex head screw is engineered to address common industrial challenges like corrosion, vibration loosening, and high-load demands. Made from 18-8 stainless steel, it resists rust and chemical exposure, making it suitable for marine, chemical processing, and food equipment applications. The Class 2A thread fit and UNF fine thread design enhance clamping force and prevent back-off in dynamic environments, while the partially threaded configuration concentrates strength at critical joint areas. With an external hex drive and right-hand thread, it ensures quick assembly in machinery, automotive, and structural frameworks, delivering long-term reliability and reduced downtime.
Specification Summary & Compliance
This screw adheres to Class 2A thread fit tolerances for consistent engagement and meets UNF (Unified National Fine) standards. It is manufactured with a 4 1/2" length, 1/4"-28 thread size, and fine thread spacing. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental safety and suitability for global industrial use.
