Specification Brand : MroMax BulletPoint1 : [Size] - Thread:M7,Head Diameter:10mm/0.39",Groove Size:4mm/0.16",Total Length:60mm/2.36" BulletPoint2 : [Advantages] - In order to replace the disadvantages of the original assembly products using wire screws and nuts. Reduce costs and avoid the risk of nut falling out. BulletPoint3 : [Durable Screws] - Connecting screws can be removed and reinstalled several times without loss of holding power. BulletPoint4 : [Design] - Flat head hex socket confirmat screws have a large shoulder under the head that lock the screw into the wood and prevent pulling through into softer materials. It has a blunt point, need to make a hole and then screw in. BulletPoint5 : [Application] - Mainly used in the furniture industry, such as cabinets, chairs, wooden toys or other types of box construction etc. DriveSystem : Internal Hex ExteriorFinish : Zinc,Metal,Steel ExternallyAssignedProductIdentifier : 6419551530722 ItemName : MroMax M7x60mm Confirmat Screws Carbon Steel Inner Hex Self-Drilling Screw for Wooden Board Connection Silver 20pcs ItemPackageDimensions_Height : 11 centimeters ItemPackageDimensions_Length : 1.5 centimeters ItemPackageDimensions_Width : 9.8 centimeters ItemTypeKeyword : self-drilling-screws Manufacturer : MroMax Material : Carbon Steel MeasurementSystem1 : Imperial MeasurementSystem2 : Metric MetalType : Carbon Steel ModelNumber : MRO190822S-0104 PartNumber : MRO190822S-0104 ProductDescription : Self-drilling screws, a type of self-tapping screw, are threaded fasteners that drill their own hole and thread it as they are installed. Usually only recommended for use with metal, self-drilling screws are available with wings that enable use when fastening wood to metal. The drill point length should be long enough to penetrate both materials being fastened before the threading portion reaches the material.