Model: Chipboard Screws. Material Specification Stainless Steel (A2). Screw Size: M3.5 x 25mm. Thread Size: M3.5. Length (L) 25mm. Head Style: Pan Head. Thread Size (T) 3.5mm. M2 M2.5 M3 M4 M5 ALLEN KEY GRUB SCREWS CUP POINT SCREWS A2 STAINLESS DIN 916.