Stainless Steel Square Washers
What are stainless steel square washers? Stainless steel square washers are four-sided washers with a large bearing area that resist pull-through and spinning in wood, timber, and structural connections. Made from 304 and 316 stainless, they resist rust in wet, coastal, and outdoor structural use.
Why square washers suit timber and structural work
A square washer's large, flat footprint spreads load over more surface than a round washer and resists spinning, which is why it is used with lag screws, carriage bolts, and timber connectors in heavy wood construction. The extra bearing area stops the head or nut from crushing into or pulling through the wood under load. In 304 and 316 stainless, they hold up in docks, decks, and coastal timber, with 316 the choice for saltwater exposure.
Why choose stainless steel square washers
- Large bearing area: spreads load and resists pull-through in wood.
- Anti-spin: square shape resists rotation.
- Corrosion resistance: 304 and 316 hold up in wet and coastal use.
- Structural fit: pairs with lags, carriage bolts, and timber connectors.
Common applications for stainless square washers
- Timber and heavy wood construction
- Lag screw and carriage bolt connections
- Docks, decks, and waterfront framing
- Coastal timber (use 316)
Pair these with stainless lag screws or carriage bolts, and browse every size and finish on the main square washers category.
Stainless Steel Square Washers FAQ
What grades do your square washers come in?
They come in 304 and 316 stainless. Use 316 for coastal and saltwater exposure.
Why use a square washer instead of round?
The larger, flat footprint spreads load over more surface and resists spinning, which helps in wood and structural timber connections.
What fasteners pair with square washers?
They are commonly used with lag screws, carriage bolts, and timber connectors in heavy wood construction.