250 pcs. Countersunk Cross Self Drilling Screw 410 Stainless Steel 38mm Length M4.2-18 Feature:1. Durable material: Good quality 410 stainless steel has high strength and good corrosion resistance, making the fasteners durable2. Rust-resistant: Galvanized provides excellent corrosion-resistant housing for durable fasteners, stable and durable3. For steel and car body material: self drilling screw is suitable for steel, car body and metal joint or steel to metal or car body4. Easy to lock without slipping: The cross-groove drive provides uniform force, easy to lock, not easy to slip, practical and quick to use5. Wide Applications: Self Drilling Screw is widely used in manufacturing, construction, engineering, assembly and other industries, brings great convenienceSpecification:Item Type: Self Drilling Screw Material: 410 Stainless Steel Product Size Specification:Thread Nominal: M4.2-18Nominal Length: Approx. 38mm/1.5inPackage List:250 x Self Drilling Screw Note:Pay attention to the correct operation.