Description
Hex Head Cap Screws Grade 8 Steel Plain (USA Made) 5/16-18 x 1-1/8 are built for strength and reliability in demanding fastening applications. Made from high-strength SAE Grade 8 steel and finished plain (no coating), these screws deliver excellent performance in metal-to-metal assemblies where flexibility and long-term durability are essential.
Key Features
- High-strength Grade 8 steel provides superior tensile strength for heavy-duty fastening.
- Plain finish means no coating, ideal for projects where the fastener will be surface-treated later or where a bare metal look is required.
- Hex head cap screw design offers easy driving with a wrench or hex socket and strong torque resistance.
- Thread size: 5/16-18 coarse thread for secure metal-to-metal or wood-to-metal connections.
- Length: 1-1/8 inches overall length to fit a variety of material stacks.
- USA made manufacturing ensures consistent quality and supply.
Common applications include automotive, machinery, equipment frames, and structural assemblies where high-strength fasteners are required. The plain finish allows you to coat, paint, or treat the fasteners as part of your project finish plan.
Tip: Use a proper hex driver to achieve the correct torque and avoid cross-threading or head rounding. Store with other SAE Grade 8 fasteners for best compatibility.
Add these Hex Head Cap Screws to your toolkit today and ensure you have reliable, high-strength fastening ready for your next heavy-duty project.
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If you’re not sure that this product is right for you, give us a call!
800-222-0324