Self Drilling Screws Shenzhen Dahe Industrial Co., Ltd. Base Info Model NO.：5.5-8.0Type：DrillingSpecification：5.5-8.0HS Code：7318140090 Description Pre：Finished Hex Nuts, 3/8 in. -16, A563 Grade a Zinc Plated Steel Next：Zinc Hex Washer Head Tek Self Drilling Sheet Metal Screws
