<h3>Key features</h3><ul> <li>3/8 x 16 Hex Screw Bolts:3/8-16 x 4-1/2" hex bolt,features clean and smooth threads without burrs</li> <li>Materials:Hex bolts are made of 304 stainless steel,corrosion-resistant for indoor and outdoor use</li> <li>Easy to Use:These bolts provide reliable fastening for many applications.the hexagonal head ensures a secure grip with standard wrenches, reducing slippage during installation.</li> <li>Widely Use: 3/8-16 Hex bolt can be widely used in construction, machinery, automotive systems. Suitable for fastening metal frames, piping, equipment, and structural components.</li> <li>Package Included:The box contains 5Pcs hex screw bolt,Thread Diameter: 3/8"; Thread Pitch: 1/16"; Screw Length: 4-1/2".</li> </ul><p>Free shipping included. 30-day hassle-free returns.</p>