Whether its for their brassy yellow color, or for the increased corrosion resistance they provide compared to standard zinc plated screws, Yellow Zinc is one of our most popular styles. An additional plating given to our standard hardened steel zinc plated screws gives them a characteristic yellow color and doubles their corrosion resistance. Because the color is so close to that of Bright Brass many customers use it as an alternate plating. Available in Square Drive only. Due to usage variables we can not guarantee these screws against corrosion. Made in USA/Canada/Taiwan. #2 Square Recess.