Special Bit Screw M3.2x50-65 S410 - White Passivation

Product Overview
This product is an S410 stainless steel extended-length countersunk self-tapping screw, size M3.2, available in lengths of 50–65mm. Featuring an identification dot on the head with a PZ (Pozidriv) recess, finished with a white passivation (pickled and passivated) treatment, and designed with full threads and a sharp point. Combining high-hardness self-tapping capability with basic corrosion resistance, it is suitable for multi-layer fastening of thick panels, making it a cost-effective general-purpose fastener for home renovation, window/door installation, and light metal assembly.

Product Applications
Window & Door Industry: Extended fastening of aluminum/PVC-U window sub-frames, glazing beads, and greenhouse aluminum profiles.
Home Decoration: Deep fastening of multi-layer wall cladding, light-gauge steel furring, and thick wood panels.
Wood-Steel Composite: Connections between solid wood joists and light-gauge steel frameworks, as well as preserved wood engineering projects.
Furniture & Light Metal: Assembly of thick-panel cabinets, indoor thin-metal equipment enclosures, and shelving units.
Applicable Environments: Suitable for indoor dry to mildly humid conditions; for coastal areas or long-term outdoor exposure, SS304 stainless steel screws are recommended instead.