Nailon™ Mushroom head pin drive anchor. Made of zinc (body). 3/16 inch drill bit diameter. 3/4 inch embedded depth. Suitable for light-duty applications under static loads. It is not designed for overhead applications and are not recommended for eccentric tension (prying) loading. Zinc Nailon anchor is available with carbon and stainless-steel pins. The pin and head configuration make this anchor tamper resistant.