Place of Origin: China

Standard: DIN

Surface treatment: Zinc plated, Yellow zinc, Blue white zinc

Head type:  Wafer

Length:  13mm-50mm

Material:  C1022A, heat treatment

Diameter:  3.9mm/4.2mm/4.8mm

Thread:  Fine

Point:  drilling point/sharp point

Usage:  for the window and door fasten and also steel sheet metal