Thread Size: 5.5 mm, No.12, #12; screw length: 1 inch; The screw length includes the head part; Don't forget to minus the head portion when choosing the right screw length
Head Diameter: 10.3 mm (max); Phillips Drive Size: #2; Please refer to the Picture 2 to get more details about the specifications.
Quantity: 50 PCS; An extra double-ended phillips driver bit included
Material: The screws are made of 410 stainless steel; Excellent toughness; No Deformation; Will not be easily stripped by screw gun; Extra Black Oxide treatments make it more chemical resistance
Application: It's used for a wide variety of home and commercial applications; High strength 410 stainless steel phillips rounded head drilling screws for metal, not for use with aluminum; They save your time and effort by drilling their own holes and fastening in a single operation; The threads are precise and clean and can easily penetrate