Fair Wind Fasteners
Silicon Bronze Flush Countersunk Washers
Silicon Bronze Flush Countersunk Washers
SKU:SB-CSKWASH-8
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Introducing our one-of-a-kind machined washers that we had made specially for us here at Fair Wind Fasteners. Made of 651 Silicon Bronze, the same alloy as our cut thread bronze wood screws, these bronze CSK washers are the perfect finishing touch for your woodworking and boatbuilding projects. Say goodbye to the frustration of split stock caused by standard screws, and goodbye to worn our screw holes on panels or hatches that are regularly removed for access. Our washers prevent this issue, and leave a meticulous "finished" look on any project. It's little details like these washers that set a good job apart from a great job.
Not only do these washers prevent splitting, but they also create a smooth, finished look that will leave your project looking pristine. The combination of washer and screw applies force like a pan or round head screw, but is counterbored to a flush position. The screw head and exposed washer rim will be at the same level, resulting in a seamless finish.
These washers are a game-changer for renovations, external trim repairs, pulling in heavy boat planks, and fine furniture. They allow you to pull warped trim or planking into place with long screws without worrying about the countersunk head of your screw splitting the timber.
When used on access hatches or a cabin sole, the hatch can be unscrewed and then re-fastened without wearing out the surrounding timber.
We recommend using a forstner bit or brad-point drill for the counterbore hole to ensure a clean finish with no tear-out, and the recommended bit sizes are below.
Specially manufactured for us here at Fair Wind Fasteners, these silicon bronze flush mount countersunk washers are perfect for adding that finishing touch to your project.
Also Available in 316 Stainless Steel!
Works with any standard Flat or Oval head wood screw with 82° countersink heads.
Bronze Countersunk Washer Dimensions
| SIZE |
FITS SCREW SIZE |
DRILL SIZE | OUTER DIAMETER | INNER DIAMETER | DEPTH |
| #6 | #6 | 5/16" | 0.306" (~5/16") | 0.154" (5/32") | 0.122" (1/8") |
| #8 | #8 | 3/8" | 0.367" (~3/8") | 0.187" (3/16") | 0.156" (5/32") |
| #10 | #10 | 7/16" | 0.432" (~7/16") | 0.216" (7/32") | 0.156" (5/32") |
| #12 | #12 | 15/32" | 0.473" (~15/32") | 0.244" (31/128") | 0.168" (11/64") |
| #14 | #14 or 1/4" | 17/32" | 0.543" (~17/32") | 0.269" (17/64") | 0.200" (13/64") |
Best product around for carpentry. Fasteners are top notch. Thanks! Cheers!
We have implemented these as a regular piece of hardware in our work. Big fan, we stock 8’s, 10’s, 12’s now as regular inventory.
Quality parts perfect for what I needed
Recently placed a couple of orders. The quality of the fasteners was more than impressive. The only thing better was the customer service and attention to detail in ensuring everything was right. Can't give enough praise.
We are reupholstering a MCM chair and adjustable ottoman for son. There was one countersunk washer left from the 2 original. Nothing online matched the style of it until I found Fair Wind. The quality and finish are superb. Service too!
I'm impressed with Fair Wind. The shopping experience and company vibe are fantastic. Will be doing more business with Fair Wind.
Good deal
Nice finish, good fit to screw heads. Look good and secure when installed.
I have used these washers numerous times and they work great. I use the 3/8 size and they’re made very consistently. They hold very well.
One of the few places left to get actual bronze wood screws, but other offerings as well. Good communication and prompt shipping.
Timely delivery and beautiful fasteners, almost hate to bury them in wood
These are nicely machined washers, which I have found to be very useful for many different applications.
USPS had marked my order as delivered, but they had not been. I reached out to Fairwind Fasteners for help, and they rectified the situation immediately. I look forward to ordering from them again!
Silicon Bronze Flush Countersunk Washers
I’d never used this type of washer before and was very pleased with the quality and look. Added a great finishing detail. I’d definitely order from Fair Winds again.
Silicon Bronze Flush Countersunk Washers
Paired these with an oval headed screw for a very elegant soution.
Great personal attention, customer service. I love being able to buy just what I need. Thanks for being there.
Excellent quality, and excellent service. My order was shipped out to me the day the order was received, and I received it the next day. Better than Amazon!
Shipping and product left nothing to be desired.
These have the usual highest quality Fair Wind fit and finish. Solid silicon bronze, finely milled on a lathe to precise dimensions and they result in a very finished look for either a flat head or oval head bronze screw. There is a practical value beyond that. They convert the wedge shear forces caused by our usual 82-degree bevel screw heads to straight down compression forces... which prevents grain splitting, especially in very hard woods such as Ipe (aka Iron Wood). My Ipe projects sometimes need bronze screws out towards the end grain and now the wedge effect is gone. Use a quality recommended size Forstner bit for your flat-bottomed recess. Thanks for these!
I appreciate the prompt shipping and service.I would suggest either a link to or if you could sell the countersink bits to correspond to these wonderful washers. Look forward to doing business in the future. J
Excellent quality silicon bronze hardware!
Buy from Fair Winds. Outstanding product and awesome customer service. Thank you guys for all that you do !
The Silicon Bronze Flush Countersunk Washers we ordered through Fair Winds Fasteners have added a refined and elegant level of detail to our current build. They are highly consistent
I have no immediate use for these, but I bought a dozen for me and a dozen for a friend. Between the two of us, something(s) beautiful will result.
These are absolutely brilliant, especially in a marine environment. I used them to make a repair to the cabin sole of my sailboat. They look great, allow a panel or hatch to be removed and reinstalled a million times without wearing out the wood substrate. They make it possible to use a flat head fastener slightly below the surface, without the undesirable wedging, splitting force of a flat-head type fastener. You have to countersink these, which means you need a nice, clean-cutting drill bit, such as a brad-point drill or a Forstener type drill bit. My project called for 1/4-20 bronze screws, so I ordered the 1/4 inch (or #14) size washer for my project. The outside diameter of the washer is 0.542 inches. That rounds up to 35/64, which is a special order size. So my one wish is that the diameter of these was a bit more standard. But they are a brilliant product, give a great look to my project, and I will order again for sure. Plus, now I am the only guy in the state of Vermont with a 35/64 brad point bit. So I have that going for me.
Could not be better great and the product what the "doctor" ordered
Sometimes I’m not sure if fasteners I choose will meet my needs so I cautiously order a few to test. Happy with my choices, then I order what I think I will need after adjusting the length or width a little. I have never been disappointed with any of my purchases from Fair Wind! All aspects of commerce from these guys (order turnaround, packing, price and customer service) is outstanding!
Quality products, with a great finish. Shipped quickly, and was packaged really nicely, also they are helpful on the phone. Thanks.
Look and fit great.