The KA1.7X8 is a Phillips recessed countersunk self-tapping screw, ROHS compliant, that is manufactured by Shuntian. The KA1.7X8 is composed of a countersunk slotted head with a cylindrical smooth shank. The head and shank are made of steel, with the head's surface being either black oxide or zinc-plated for added corrosion resistance. The shank has helical threads that allow it to tap its own female mating threads. This makes the KA1.7X8 results in a strong fastening that is highly resistant to loosen due to vibration. Furthermore, its countersunk head decreases the risk of snagging and allows a flush finish after installation. The KA1.7X8 is mainly used to fasten parts in furniture, computers, and appliances as well as a multitude of purposes in the transportation, heavy machinery, and construction industries.