[100 PKG] Cap Screws Flat Socket Alloy Thermal Black Oxide 5/16-18 X 5/8

Cap Screws Flat Socket Alloy Thermal Black Oxide 5/16-18 X 5/8 provide reliable fastening for assemblies where a flat socket cap screw is required. Constructed from alloy steel and finished with a thermal black oxide coating, these screws combine durability with a low-glare, corrosion-conscious surface.

• Thread size: 5/16-18
• Length: 5/8 in
• Material: Alloy steel
• Finish: Thermal black oxide
• Head style: Flat Socket

Ideal for automotive, machinery, and general mechanical applications where precise, secure fastening matters. These cap screws are designed for dependable performance in a variety of environments, delivering consistent clamping with a sleek, professional appearance.