S-90300A190 3/8"-16 x 1 1/2" 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
- Enhanced corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability
- Superior load distribution thanks to the integrated flat washer, reducing surface pressure and preventing material damage
- High tensile strength of 100,000 psi ensures dependable performance under heavy-duty mechanical stress
- Precise Class 2A thread fit provides smooth assembly and secure fastening with consistent engagement
- Fully threaded design maximizes grip length and holding power across the entire screw length
- External hex drive allows for easy installation and high torque application with standard tools
- Compliance with RoHS 3 and REACH guarantees environmental safety and regulatory acceptance in global markets
Professional Applications & Engineering Value
These 3/8"-16 UNC hex head screws with integrated flat washers are engineered to address common industrial challenges such as vibration loosening and surface damage. The 18-8 Stainless Steel material offers excellent corrosion resistance, making them suitable for outdoor, marine, and chemical-exposed applications. The coarse UNC thread and Class 2A fit ensure quick, reliable installation in a variety of materials, while the flat washer distributes clamping force evenly, protecting soft surfaces and enhancing joint integrity. Ideal for machinery, structural assemblies, and heavy equipment, these screws deliver consistent performance where durability and regulatory compliance are critical.
Specification Summary & Compliance
This screw features a 3/8"-16 UNC coarse thread with Class 2A thread fit for standard tolerance and ease of assembly. It is fully threaded and includes a stainless steel flat washer (OD: 1.015", Thickness: 0.064"). Manufactured from 18-8 Stainless Steel with a tensile strength of 100,000 psi and Rockwell B95 hardness, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability.
