LFPartS Stainless Steel License Plate Frame Machine Screws Fasteners ((4x) M5x20, Screws + Black Screw Covers) LFPartS Stainless Steel License Plate Frame Machine Screws Fasteners + Black Screw Covers. The screws made of high quality 304 Stainless Steel, will never rust. The caps made of high quality ABS plastic. M5x20 Designed to fit some German cars license plates and frames. Pkg Includes set of 4 Screw Covers and SS Screws.