Cross recessed (+) pan head screw(Washer head(Coarse Stainless steel Unplated 5 X 8 Pitch 0.8

There is no particular fixed application for these. They are used in a variety of locations; however, since the machine screw itself is only available up to 12mm in size, they are primarily used for fastening small components.
Pan Head Machine Screw Head Dimensions Reference　Pan Head Machine Screw Encyclopedia

• Cross recessed (+) pan head screw Washer head Coarse pitch
• Nominal diameter (d) M5
• Length under head (ℓ) 8.0
• Pitch 0.8
• Cross recess number 2
• Pan head diameter (dk) Nominal 9.0 Tolerance 0,-0.6
• Washer section diameter (dc) Nominal 12.0 Tolerance 0,-0.5
• Head height (k) Nominal 3.5 Tolerance ±0.3
• Washer section thickness (t) Nominal 1.0 Tolerance ±0.5
• Cross recess (m) Reference 4.9