5/16-18 x 3/8 Coarse Thread Socket Head Cap Screw Black DFAR RP1 They are made of steel

They are made of steel and coated with zinc and baked for added durability

- The 3/8 inch length is the overall length of the screw from the underside of the head to the tip

The 7/16-14 x 3 Carriage Bolt Grade 8 Fully Threaded Yellow Zinc is a high-strength fastener designed for heavy-duty applications

this screw offers maximum holding power and is ideal for securing metal

5/16-18 x 3/8 Coarse Thread Socket Head Cap Screw Black DFAR RP1 They are made of steelThis 5 16 18 x 3 8 Coarse Thread Socket Head Cap Screw is made of durable steel and features a black DFAR finish for corrosion resistance. It has a hex socket drive for easy installation and removal, and its coarse threads provide a secure hold in a variety of materials. The screw is 3 8 inches long and has a diameter of 5 16 inches. It is commonly used in automotive, construction, and manufacturing applications.