These are custom, type 303 stainless steel screws for mounting Very Low Profile Male Clips into panels as thin as 1/4" (5.5mm) thick, with or without adhesive.
Use with the male clips in VL-03 series of Very Low Profile Clip Sets.
1 screw is included with VL-03 and VL03H.
2 screws are included with VL03FR.