Fair Wind Fasteners
Silicon Bronze Hex Cap Screws / Hex Bolts
Silicon Bronze Hex Cap Screws / Hex Bolts
SKU:SB-HCS-1/4-20x1/2
Couldn't load pickup availability
Our solid 651 silicon bronze hex cap screws, often referred to as hex head bolts or tap bolts, are a solid bronze alloy, specifically CS65100 silicon bronze. All of our hex cap screws are fully threaded with a standard imperial coarse thread, and meet SAE specifications as well as ASME B18.2.1 and ASTM F468 with grade markings on the heads.
Non-magnetic, electrically conductive, high strength, and extremely corrosion resistant properties make these solid bronze hex bolts excellent for a variety of uses including:
- Use on a boat where corrosion resistance from seawater is paramount
- Use in electrical generation or in the power and energy industry for their highly conductive, high strength, and corrosion resistance
- In general construction, where proximity to salt spray or other corrosive environments is of concern
- Use in water treatment plants, where they will resist corrosion from chlorine or other treatment chemicals
- Use in electrical grounding
- Use on dams, dikes, and levies where they won't corrode and are easily removed years down the line.
Put the exact quantity you'd like to order in the "Quantity" box above and your quantity discount will be automatically applied during checkout.

Ordered some bronze bolts. A tiny order really. They shipped right away and provided tracking immediately. They even included a hand written thank you in the box. I will definitely shop here again.
Volante: I am restoring and 1887 "Sandbagger" sailboat. Everything from the waterline down required replacement. I have been using silicon bronze screws and bolts throughout. If you want to use the more enduring and best connectors for wood boats, this is the product to use!
Go to for quality hard to find fasteners, great service , fast shipping!!
I was looking for quality fasteners for a small repair on my boat and needed silicon bronze for the corrosion resistance. Fairwinds had the complete array of bolts, washers, and lock washers for my needs. I'd work with them again for high quality fasteners.
As promised
Quality appears good.
A great find for good pricing and excellent service on Bronze fasteners. Thank you!
Quality product, good service!
- 5 stars: 69 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 star: 0 (0%)
Ordered some bronze bolts. A tiny order really. They shipped right away and provided tracking immediately. They even included a hand written thank you in the box. I will definitely shop here again.
Volante: I am restoring and 1887 "Sandbagger" sailboat. Everything from the waterline down required replacement. I have been using silicon bronze screws and bolts throughout. If you want to use the more enduring and best connectors for wood boats, this is the product to use!
Go to for quality hard to find fasteners, great service , fast shipping!!
I was looking for quality fasteners for a small repair on my boat and needed silicon bronze for the corrosion resistance. Fairwinds had the complete array of bolts, washers, and lock washers for my needs. I'd work with them again for high quality fasteners.
As promised
Quality appears good.
A great find for good pricing and excellent service on Bronze fasteners. Thank you!
Quality product, good service!
Have ordered several times. Quick shipping, good products, would definitely order from them again.
As a first time customer, I was very impressed with the quick service, speedy delivery, and the care taken in packing my order. After purchasing from another company who shall remain nameless, and receiving 500 bolts tossed loose in a box, finding these packaged in several smaller boxes inside the shipping box was a delight. Thanks! We'll be back.
Great source of bronze fasteners
Great service
Quick response and shipping
Fast shipping and solid product. I will definitely buy here again.
the silicon bolts nuts and washers where first-class FAIR WINDS is a real co when you call you get a live person and there shipping is fast thank you Eddie Reid
My bolts arrived quickly and everything I ordered was of the highest quality…..I will definitely order from Fair Winds again!
Silicon Bronze Hex Cap Screws / Tap Bolts
First FAIRWIND order. Quick shipping and excellent product. I will buy more. Thanks FAIRWIND FASTENERS.
Website was easy to use, product was competitively priced, shipping was on time, product was of exceptional quality, will purchase from again. Thank you
It's great to have a marine hardware specialty website available. They had what I needed and got it to me quickly.
The fasteners were exactly what we were looking for. They were provided in a timely manner. We will certainly be using Fair Wind again.
Great Company
Great fasteners and great price! I’m not using these for their intended purpose (marine applications) but machining the head down to a round shape and drilling and tapping the center - exactly what I needed for a product that I sell.
If you’re looking for the best marine hardware look no further. I won’t buy my hardware anywhere else.
shipping was fast, big selection of marine grade hardware thats hard to find sold by the piece! A great find for me
Excellent Quality, Great Customer Service, Fast Delivery, Very Pleased!
Very pleased with the quality of the fasteners… expensive but I needed bronze fasteners and these guys provided high quality products.
I was impressed by the selection and quickly I received my shipment. Received product as described.
The customer service I received at Fair Wind was very good. We needed Build America, Buy America parts and they were very helpful in getting parts for us, and in a timely manner.
Even better that Fair Wind Fasteners is a small business that really cares. Thanks Rob!
I ordered 1/4 x 2” bolts. Was exactly what I was looking for. Couldn’t have been better quality.
I only need a couple items to complete a small job before relaunching. Fast shipping and great products.
Quality and quick delivery