U-Turn - 1/4-20 x 2 1/2 inch Flat Head Floorboard Thread Cutting Screws Type F T30 Torx Black Phosphate 100 Pack
- SELF TAPPING TRAILER DECK SCREWS - Designed specifically for attaching wood floors into truck trailers, but they can be used in a number of different applications such as those involving fastening to heavy gauge sheet metal, aluminum, castings, cast iron, brass, and plastic..
- MATERIAL - Hardened Steel (RC 45 Minimum Case Hardness) | BLACK PHOSPHATE & OIL COATING - Provides corrosion Resistance.
- For consistent performance, the material in which the threads are cut should have a lower hardness of at least 10-20 Rockwell points.
- RECOMMENDED PLATE THICKNESS - .247 inches- .253 inches | RECOMMENDED HOLE SIZE - .228 inches (#1 Drill Bit Size).