Detailed Product Description Description:SUS 304, 316 Pan Head Self Tapping Screw1) Material: Carbon Steel, Stainless Steel, etc2) Finish: Cr3+ or Cr6+ Zinc plated. 3) Dia. 2.9mm--6.3mm4) Length: 6.5mm--150mm5) Grade: SUS 304, 316,Carbon Steel6) Packaging: carton box, be specified by the buyer.