Square Washers
Square Washers sit under a Bolt head or Nut to spread the clamp load and protect the work surface. The right washer protects the joint, spreads the load, and keeps the fastener from working loose over time. South Coast Fasteners keeps Square Washers in stock and ready to ship. Ships in 24 hours or less.
Materials and Finishes
Square Washers come in grades matched to the load, from carbon steel through high-strength alloy and corrosion-resistant stainless, with finishes from plain and zinc through hot-dip galvanized for outdoor and washdown service. Pair them with Bolts and Flat Washers to round out the assembly.
How to Choose
Start with the diameter, thread pitch, and length your assembly needs, then choose a grade that carries the working load and a finish suited to the environment. Step up to alloy or stainless when strength or corrosion resistance is critical.
Square Washers Industry Applications
Square Washers show up across a wide range of industries and applications. Fabrication and HVAC add tension to keep joints tight with them, while Construction back oversized and soft-material holes with them. Plain, zinc, and stainless, in SAE, USS, and structural sizes matched to the bolt diameter.
Frequently Asked Questions
What materials and finishes are square washers available in?
Square Washers come in Steel, Cast Iron, and F-436 Hardened, with Hot Dip Galvanized, Plain, and Zinc Cr+3 finishes.
What are square washers used for?
Square Washers are specified across fabrication, HVAC, and construction, from structural framing and heavy equipment to machinery and general repair.
How do I choose the right square washers?
Start with the diameter, thread pitch, and length your assembly needs, then choose a grade that carries the working load and a finish suited to the environment. Step up to alloy or stainless when strength or corrosion resistance is critical.
Can I order in bulk or request a quote?
Yes. Stock covers small orders and full production runs. Reach Out for a quote or product help.
Why Choose South Coast Fasteners?
We are a single source for fasteners, PPE, Hand Tools, Cutting Tools, Abrasives, and Industrial Supplies, priced to compete and shipped fast by a crew that uses this gear every day. We also stock Finished Hex Nuts, Fasteners, and Carriage Bolt.