1/4-20 x 2 1/4 Flat Head Floorboard Thread Cutting Screws, Type F, (Star - Six Lobe Drive), Black Phosphate Finish, Countersunk, T-30 Drive (Carton: 100pcs) Alloy Steel

• Floor board screws are specially designed for installing wood floors into truck trailers
• Six-Lobe Recess Flat Heads (Floorboard)
• Self Tapping Thread Cutting Screws - Measure length from the top of the head to the tip
• Black Phosphate and Oil Finish. The oil serves as a rust inhibitor and a lubricant
• The head design of Floorboard Screws provide a flush surface in countersunk holes. For this reason, they are perfect in floorboard fastening applications.

A countersunk, six-lobe thread cutting screw with machine screw thread pitch, blunt point, tapered entering threads, and multiple cutting edges. Floorboard screws are, by definition, available in much longer sizes than standard type-F screws. Common For Trailer Flatbed Also Called ôSix Lobeö Also Called ôStar Driveö Also Called ôDecking Screwö Black Phosphate Will Thread Into A Pre-Drilled Hole Tapping Point = ôFö