Specification Brand : uxcell BulletPoint1 : Thread Diameter: ST4.2(#8); Length: 3/4"(19mm); Screw Head Size: 7.82 x 2.95mm / 0.31" x 0.12"(DxT); Thread Pitch: 1.4mm; Screw Drilling Range (Plate Thickness): 1.75mm-3mm; Package Content: 50pcs x Self-Tapping Screws BulletPoint2 : Material: Made of 410 stainless steel, zinc plating treatment on the surface, high strength, rust and corrosion resistance, durable. BulletPoint3 : Design: It is driven by a cross groove, with uniform force, easy to lock, not easy to slip, and convenient and quick to use. BulletPoint4 : Advantage: The thread design of the flat head self-tapping screw can easily penetrate wood boards, plastic boards, and metal boards, making the connection between the two fast, and can maintain a good grip and is not easy to deform. BulletPoint5 : Application: 410 stainless steel self-drilling screws are widely used in various product field, such as industrial machinery, instruments and equipment, electronic products, furniture and home appliances, car and ship accessories, locks, lamps, etc. Color : Black DriveSystem : Phillips DriveSystem1 : Phillips DriveSystem2 : Cross ExteriorFinish : Carbon Steel ExternallyAssignedProductIdentifier1 : 737494787161 ExternallyAssignedProductIdentifier2 : 0737494787161 ItemName : uxcell ST4.2x19mm Sheet Metal Screws, 50pcs Black Oxide Zinc Plating Flat Head Phillips Drive Self Drilling Screws ItemPackageDimensions_Height : 0.67 inches ItemPackageDimensions_Length : 3.54 inches ItemPackageDimensions_Width : 2.36 inches ItemPackageQuantity : 50 ItemTypeKeyword : sheet-metal-screws Manufacturer : uxcell Material : Stainless Steel Material1 : Stainless Steel Material2 : Zinc Material3 : Alloy Steel MeasurementSystem : Imperial MeasurementSystem1 : Imperial MeasurementSystem2 : Metric MetalType : Carbon Steel ModelNumber : 10003 NumberOfItems : 50 NumberOfPieces : 300 PartNumber : a23070400ux0456 ProductDescription : Description: 1. Material: Made of 410 stainless steel, zinc plating treatment on the surface, high strength, rust and corrosion resistance, durable. 2. Design: It is driven by a cross groove, with uniform force, easy to lock, not easy to slip, and convenient and quick to use. 3. Advantage: The thread design of the flat head self-tapping screw can easily penetrate wood boards, plastic boards, and metal boards, making the connection between the two fast, and can maintain a good grip and is not easy to deform. 4. Application: 410 stainless steel self-drilling screws are widely used in various product field, such as industrial machinery, instruments and equipment, electronic products, furniture and home appliances, car and ship accessories, locks, lamps, etc.