... M3-16 (as your favor)Model Number:Pan Head Self-Drilling Screw with PH SlottedGrade: 4.8, 8.8Length: 13mm ... Nuts: spring nuts, T nuts, K nuts, rivet nuts, cage nuts, lock nuts, hex nuts, hex flange nuts, wing ... bowl washer.Screws: machine screws, self tapping screws, self drilling screws, set screws, hex socket head cap screws, wood ... Best Choice for You Slotted Pan Head Self-Drilling Screws Zinc Plated