The Lincoln Grease Fitting is a thread-forming type with a 1/4-28 thread size, made from high-quality steel with a zinc yellow (ZY) finish for enhanced corrosion resistance. This fitting is designed for easy installation and reliable performance in lubrication systems. Its robust construction ensures it can withstand high-pressure environments, making it suitable for automotive and industrial applications. The grease fitting is compatible with standard grease guns, ensuring efficient lubrication of machinery and equipment.