Product Screws Drywall Nail Material Carbon steel Color Black Standard ISO,GB,DIN,JIS,ANSI,BSW Diameter M3.5-M6.3, 6#-14# Length 11mm-175mm, 5/8′-7′ inch Surface finish Black phosphate plated,Zinc plated Thread Full thread and half thread,fine thread and coarse thread ...
Shaft material: 40Cr(ASTM A5140) or 45#(ASTM 1045) steel. Helix plate: ASTM A36 hot rolled plate, available in 3/8\'\' and 1/2\'\' thickness. All helix leading edges sharpened and rock cut and 45 degrees. Corrosion protection: ASTM A153, hot dipped zinc coating. Efficient ...
Shaft material: Seamless high tensile pipe, conforms to ASTM A500 GRADE B or Customized. Helices material: ASTM A36 hot rolled plate. Corrosion protection: ASTM A153, hot dipped zinc coating. Leading edge of helices beveled 45 degrees. Greater section modulus strength to resist ...