An SS (Stainless Steel) Plain Washer is a flat, circular metal disc with a central hole, used with bolts/screws to distribute load, prevent surface damage, act as a spacer, reduce friction, and provide corrosion resistance, commonly made from grades like SS304 or SS316 for durability in various industrial and construction settings, adhering to standards like DIN 125. Key Characteristics & Functions:
- Material: Stainless Steel (SS), offering excellent corrosion resistance (e.g., SS304 for general use, SS316 for marine/harsh conditions).
- Shape: Flat, round disc with a central hole for fasteners.
- Primary Use: To spread the clamping load of a threaded fastener (bolt, nut, screw) over a larger surface area, preventing the fastener from sinking into or damaging softer materials.
- Secondary Uses: Can serve as spacers, provide electrical insulation, or reduce wear and vibration.
- Standards: Often manufactured to specifications like DIN 125, IS 2016, or ASTM standards.