Silicon bronze
fasteners for electrical
& marine work.
Bolts, nuts, and washers in C651 silicon bronze. Conductive for electrical connections, corrosion-resistant for saltwater service. Plain or tinned finish, stocked and shipped nationwide.
Conductive
Much higher electrical and thermal conductivity than stainless — suited to current-carrying joints and grounding hardware.
Corrosion-resistant
Holds up in saltwater, chlorides, and most industrial atmospheres. Weathers to a stable patina rather than pitting.
Non-magnetic
A practical choice near instrumentation and equipment sensitive to magnetic interference.
Plain or tinned
Plain bronze for most work; tinned finish available for soldered and terminal-lug connections.
Bolts, nuts, and the
washers that go with them.
Hex bolts, hex nuts, flat washers, and lock washers — all in C651 silicon bronze. Standard sizes stocked; cut-to-length and custom fabrication available on request.
Hex head bolts
Forged hex head, full or partial thread, plain or tinned finish. The standard bronze bolt for marine and electrical use.
Hex nuts
Finished and heavy hex nuts machined from bronze bar. Sized to pair with our bolt inventory.
Flat washers
Flat washers in standard and fender patterns to distribute load and protect mating surfaces.
Lock washers
Split-ring lock washers for connections subject to vibration — electrical buswork, marine fittings, terminal lugs.
A sensible choice for current-carrying connections.
Silicon bronze conducts electricity and heat far better than stainless while holding similar mechanical strength. It's commonly specified for buswork, grounding hardware, and terminal connections.
Tinned finish is available where low contact resistance matters, such as soldered joints and terminal lugs.
Request a quoteBronze vs. the alternatives
The traditional fastener for saltwater service.
Silicon bronze has been used in boatbuilding for generations. It resists the corrosive effects of seawater, doesn't gall against other bronze hardware, and weathers to a stable patina instead of pitting.
- Shipbuilding, repair, and restoration
- Dock, pier, and marina hardware
- Deck and through-hull fittings
- Galvanic compatibility with bronze and copper alloys
- Plain or tinned finish
Common applications.
Most of our silicon bronze work falls into one of three areas. Let us know what you're specifying and we'll pull the right size and finish.
Stocked and ready
to ship.
We keep an inventory of silicon bronze hardware across common sizes and finishes, ready to ship from stock. For sizes we don't stock, custom fabrication is available on a short lead time.
Looking for something
a little different?
Bronze sits in a narrow lane — marine, electrical, and architectural. If your job calls for a different metal, start here.
Tell us what you need.
Diameter, length, quantity, and finish — or just paste the line item from your BOM. Most quotes turn around within 24 hours.
Visit our Specification Library.
Standards, material guides, and technical references for the industries we serve — bronze, stainless, carbon, and alloy.
Browse the libraryReady when you are.
Send over your spec and we'll get a quote back, usually within 24 hours. Or pick up the phone — we're happy to talk through the job.