Specification Brand : Bopowo BulletPoint1 : 1. Professional flooring installation screws:Specifically designed for flooring panels, Type F thread cutting structure, can be quickly self-tapping cut into the wood surface, to ensure a solid bite, for hardwood, laminate flooring and other efficient installation. BulletPoint2 : 2. T-40 Torx six-petal star driver:Adopts Star/Torx (T-40) drive design, providing higher torque transfer efficiency, anti-slip and reduced screwdriver head wear, suitable for high-intensity repetitive installation needs. BulletPoint3 : 3. Black Phosphate Anti-corrosion Coating:The surface is treated with black phosphate to enhance corrosion resistance and abrasion resistance, suitable for indoor and mildly humid environments, prolonging the service life of screws. BulletPoint4 : 4. Countersunk head design + matching drill bits:Flat Head structure ensures that the screws are flush with the surface of the plate after installation, beautiful and no protrusion; 9/32-inch (7.2mm) drill bit is included, which is easy to pre-drill holes to match and enhance the installation accuracy. BulletPoint5 : 5. Standardised Specifications and Convenient Packaging:1/4-20 UNC coarse thread, 2.5 inches (approx. 63.5mm) length, providing high load capacity and penetration; Individually packaged or sold in a whole box to meet the needs of home DIY or project bulk use. BulletPoint6 : 6.Highlights Refinement: Floor-specific, Torx high-efficiency drive, rust-resistant coating, countersink levelling, matching drill bit in one step. Color : black ExteriorFinish : Black Oxide GradeRating : Class 8.8 ItemName : Bopowo 100 Qty 5/16-18 x 2-1/2" Flat Head Thread Cutting Trailer Deck Screws, Black Phosphate, Package Contains T40 Star Drivea and 9/32 Drill bit ItemPackageDimensions_Height : 16.1 centimeters ItemPackageDimensions_Length : 7.2 centimeters ItemPackageDimensions_Width : 12.2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : thread-forming-and-cutting-screws Manufacturer : Bopowo Material : Carbon Steel MaximumShearStrength : 70000psi MetalType : Carbon Steel NumberOfItems : 100 NumberOfPieces : 100 PartNumber : DBQG-5/16-18 x 2-1/2-100 ProductDescription : Bopowo 100 Qty 5/16-18 x 2-1/2" Flat Head Thread Cutting Trailer Deck Screws, Black Phosphate, Package Contains T40 Star Drivea and 9/32 drill bit" ProductSiteLaunchDate : 2025-02-17T06:10:31.290Z Size : #5/16-18 x 2-1/2" SupplierDeclaredDgHzRegulation1 : not_applicable SupplierDeclaredDgHzRegulation2 : not_applicable SupplierDeclaredDgHzRegulation3 : not_applicable SupplierDeclaredDgHzRegulation4 : not_applicable SupplierDeclaredDgHzRegulation5 : not_applicable UnitCount : 100 UnspscCode : 31161500