ST3.5*6.5 DIN7981 Stainless Steel 304 Plain Self Tapping Screws

The ST3.5*6.5 size (3.5mm outer diameter, 6.5mm length) suits light-gauge sheet metal connections — stainless steel cladding panels, food equipment enclosures, marine hardware, and architectural metalwork. The plain (as-finished) surface maintains the natural corrosion resistance of the stainless steel without additional coatings that could compromise hygiene or chemical compatibility.

DIN 7981 standardised thread geometry ensures reliable thread forming in thin stainless sheet and aluminium, with consistent installation torque for manual and power screwdriver applications. The pan head profile distributes bearing load evenly across the mating surface, reducing the risk of surface marking on visible architectural or food-grade finishes.

SS316 available for chloride-rich marine and coastal environments. OEM/ODM customization supported.