When saltwater, harsh gases, or corrosive industrial environments eat through plated steel and even stainless hardware, bronze fasteners are the solution. KD Fasteners, Inc.® is a fastener supplier stocking bronze nuts, bolts, screws, and washers in the alloys engineers specify for marine, electrical, and high-corrosion applications.


bronze fasteners

Why Specify Bronze Fasteners?

Most bronze fasteners are made from silicon bronze, a copper alloy containing 95% to 98% copper with a small amount of silicon and zinc added for strength. Silicon bronze is non-magnetic and has a high degree of thermal conductivity. It delivers strong corrosion resistance in harsh environments such as salt water and gases. That combination makes it a practical specification where stainless steel or coated steel will not hold up.

Bronze also develops a protective patina over time, preserving the structural integrity of the fastener without plating or additional coatings. That gives it a place in marine hardware, shipbuilding, electrical grounding, pump and valve assemblies, architectural work, and historical restoration projects.

Bronze Alloys We Stock

KD Fasteners carries several grades of bronze so you can match the alloy to the job:

  • Silicon Bronze 651 and 655 for general corrosion-resistant nuts, bolts, and screws
  • Commercial Bronze for applications where good machinability and moderate strength are needed
  • Phosphorus Bronze for wear-resistant and spring-related hardware
  • Naval Bronze for seawater and chloride-heavy environments
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Bronze Alloys We Stock
Off-the-Shelf Bronze Fasteners

Off-the-Shelf Bronze Fasteners

Our stock bronze nuts and bolts include hex cap screws, hex nuts, flat washers, lock washers (internal, external, and split), machine screws, and self-tapping screws.

For assemblies that also call for specialty hardware, we can quote carriage bolts, heavy hex nuts, wing nuts, and flange nuts in bronze alongside your stock order.

Custom and Metric Bronze Fasteners

If the size, thread, or head style you need is not stocked, we can make your silicon bronze fastener to print. As a nuts and bolts manufacturer with in-house production capabilities, KD Fasteners runs bronze to your drawings, including metric nuts and bolts for equipment built to ISO, DIN, or JIS standards.

Our work as a metric nuts and bolts supplier covers the same alloy options in metric callouts that you would find in our imperial stock.

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Custom and Metric Bronze Fasteners

Request a Quote on Bronze Fasteners

From replacement hardware for a marine repair to a production run of silicon bronze bolts for a specific industry application, KD Fasteners has the alloys and the manufacturing to deliver. Request a quote or call 800-736-5014 to talk through your bronze fastener requirements.

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