Square Nuts

South Coast Fasteners, Inc. supplies square nuts known for their large surface area and easy grip, making them a great choice for applications requiring strong, secure fastening. With a square shape instead of the traditional hex, these nuts offer increased bearing surface and are commonly used in machinery, structural projects, and restoration work where sturdy connections matter.

Get Superior-Quality Fasteners at Competitive Prices

Use the options below to find the fasteners you need in the quantities required for your application. Questions? Contact us today, and our team will gladly assist you in finding the best fastening solutions for your requirements. With South Coast Fasteners, you can count on helpful support, competitive pricing, and top-quality products for all your fastener requirements.

Material Options

South Coast Fasteners stocks square nuts in:

A307 Grade A
Low carbon steel for general-purpose fastening, often used in vintage or restoration projects
Steel
Durable and economical for use with square head bolts or where extra surface contact is needed
Stainless Steel 18-8
Corrosion-resistant and versatile for indoor, outdoor, or marine environments

Available Finishes

South Coast Fasteners offers square nuts in:

Hot Dip Galvanized
Plain
Zinc Cr+3

Why Choose South Coast Fasteners?

South Coast Fasteners provides square nuts that deliver solid hold and ease of use across a variety of jobs. With trusted materials and protective finishes, these nuts help ensure your assemblies stay tight and reliable over time.

Order Square Nuts Online Today

South Coast Fasteners makes it simple to order square nuts in the materials and finishes your project requires. Browse our inventory online or get in touch for assistance with sizing or bulk orders. We’re here to help you build strong and secure connections.