Description
Hex Head Cap Screws Grade 5 Steel Plain Fine Thread (USA Made) 1/2-20 x 3 are high-strength fasteners designed for demanding assemblies. These screws combine durability, precise thread engagement, and domestic manufacturing quality for reliable performance in automotive, machinery, and equipment projects.
Built from Grade 5 steel, they offer strong performance under load while the plain finish keeps the surface unobtrusive in tight spaces. The fine 1/2-20 thread provides smoother engagement and better alignment in structural connections.
- Size: 1/2" diameter
- Thread: 1/2-20 UNC (Fine Thread)
- Length: 3" overall
- Finish: Plain (uncoated)
- Head: Hex head cap screw
- Material: Grade 5 steel
- Made in: USA
Applications include heavy machinery, automotive assemblies, equipment frames, and other projects where a strong, precise fastener is essential. Pair these screws with compatible nuts or tapped holes that match 1/2-20 threads for secure, lasting joints.
Tips for best results: use the correct sized wrench or socket, apply appropriate thread lubricant to ease installation, and avoid overtightening to protect threads and components. For many projects, these Grade 5, plain-finish screws strike the right balance between strength, simplicity, and cost.
Can We Help?
If you’re not sure that this product is right for you, give us a call!
800-222-0324