APPLICATIONCross recessed countersunk head wood screws are primarily used in the carpentry and construction industries to join wood pieces with flat surfaces. Their tapered head sits flat in pre-drilled countersunk holes, making them suitable for furniture assembly, cabinets, and decorative work where a smooth surface is required. The cross/cross recessed threads ensure a secure tightening, while the threads firmly grip the wood fibers. Common applications include: patios, fences, frames, farms, ladders, outdoor furniture, pet houses, doors, tables, chairs, shelves, workbenches, drawers, DIY, boats, picture frames, jewelry boxes, mailboxes, wine cabinets, and more.ABOUT THIS PRODUCT-Carbon steel materials are high in hardness, are not easy to deform, and are durable.-The metal surface has been specially treated to make it more beautiful and practical.-High Strength - Higher tensile strength than stainless steel.-A variety of sizes are available to meet a variety of uses.SPECIFICATIONColor: BlackHead Style: Phillips HeadThread size: ST1x3/4/5mm,ST1.2x3/4/5mm,ST1.4x3/5mm,ST1.7x5/6mmMaterial: Carbon SteelSurface Treatment: Black OxidePackage: 1000 packs of phillips flat head wood screwsNOTE-Before purchase, confirm the correct size needed. Use a caliper or gauge checker for measurement; avoid using a ruler or tape measure.