Technical drawing for non standard screw with split head in attachment The average annual forecast quantity is accordingly: 1. non standard screw M4 with split head 2 310 000 pcs. - material Steel gal Zn 2. non standard screw M5 with split head 660 000 pcs. - material Brass Cu Zn 3. non standard screw M6 with split head 660 000 pcs. - material Brass Cu Zn