S-90300A160 5/16"-18 x 1" Hex Head Screws with Flat Washer
Hex Head Screws with Flat Washer
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Washer & Nut
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance thanks to 18-8 Stainless Steel construction, ensuring long-term reliability in harsh environments
- Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B95 hardness for demanding load-bearing applications
- Integrated flat washer design provides superior load distribution and prevents surface damage during installation
- Precision Class 2A thread fit ensures smooth installation and reliable fastening performance in UNC coarse thread applications
- External hex drive compatibility allows for high-torque installation using standard industrial tools
- Full threading along the 1" length enables maximum grip and adjustment flexibility in various material thicknesses
- Regulatory compliance assurance with RoHS 3 and REACH standards for environmentally responsible manufacturing
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 5/16"-18 UNC hex head screws with integrated stainless steel flat washers solve critical assembly challenges. The 18-8 Stainless Steel composition provides excellent corrosion resistance for outdoor equipment, marine components, and chemical processing facilities. The coarse UNC threading combined with Class 2A fit ensures rapid installation in production environments while maintaining vibration resistance. The 0.89" OD washer significantly increases bearing surface area, preventing pull-through in soft materials and distributing clamp load effectively. This combination of high tensile strength and integrated washer design makes these fasteners ideal for structural assemblies, machinery frames, and heavy-duty equipment where reliability and corrosion resistance are paramount.
Specification Summary & Compliance
These hex head screws feature precision 5/16"-18 UNC coarse threads with Class 2A thread fit for consistent installation performance. The 1" length provides versatile fastening capability across various material thicknesses. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety. The fully threaded design and external hex drive configuration meet industrial standards for high-strength fastening applications.
