3-piece set (screw head, check ring and seal ring (for optics, CD, DVD, and lens production))

3-piece set (screw head, check ring and seal ring (for optics, CD, DVD, and lens production))

3-piece set (screw head, check ring and seal ring (for optics, CD, DVD, and lens production))

  • Material: DAC
  • Treatment:
    • vacuum thermal treatment, HRC 48 -52
    • TIN coating
  • Corresponding resin: polycarbonate, acrylic