Silicon Bronze Flat Head Machine Screw/Bolt
Bronze CSK Machine Screws
Silicon Bronze Machine Screws
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Flat Head Silicon Bronze Machine Screws / Bolts

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Solid 651 Silicon Bronze Flat Head Machine Screws with a Slotted Drive

These machine bolts have a flat head. You can also find bronze oval head machine bolts or round head machine bolts at our store.

Our Silicon Bronze Machine Screws, often referred to as Machine Bolts, are the highest quality available, made of a solid 651 Silicon Bronze Alloy, and manufactured to meet ASME B18.6.3 standards. These fasteners are often used as bolts with nuts on the end or can be driven in to tapped holes. All of the Machine Screws we carry come with a slotted drive. These flat headed machine bolts have a countersunk (CSK) head, with a standard 82 degree angle on the countersink.

4" lengths and less are fully threaded with rolled threads, while lengths over 4" are partially threaded with full body shanks and cut threads.

We carry one of the largest selections of solid bronze machine screws in the USA. Use them in your boat building application to attach bronze hardware, in your electrical application since bronze is such a good conductor, or in any application where the highly anti-corrosive nature combined with the beauty of bronze is fitting.

We do things a bit differently here at Fair Wind Fasteners. Rather than force you to purchase an entire box of fasteners you can put the exact quantity you need in the quantity box above and we'll box and send the perfect amount. Quantity discounts will be automatically applied.

Customer Reviews

Based on 37 reviews
Brad Stepanek
Silicon bronze screws

Hard to find any more. Shipping us problematic for something so small and light

Geoffrey Tharpe


Brian Walsh
The best bronze fasteners available

We have a large wooden sailboat. There is always something that needs to be replaced or repaired, that is just the nature of a wooden boat that is both used and loved. Fair Wind is our go-to place for bronze fasteners. Fast service and excellent quality, great inventory. You can't ask for more.

James Baldwin
Good products, easy shopping

That had what I wanted and shipped it fast.

The “Go To” Fastners Supply

Excellent customer service, great quality, fast shipping, good packaging.