Fair Wind Fasteners
Silicon Bronze Hex Jam Nuts
Silicon Bronze Hex Jam Nuts
SKU:SB-JN-1/4-20
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Our hex jam nuts are a true, solid 651 Silicon Bronze Alloy and comparable to our regular hex finish nuts but thinner. Two jam nuts are generally used at a time, and tightened against one another for a locking effect. Jam nuts are often also referred to as:
- Check Nuts
- Thin Hex Nuts
- Thin Nuts
Need an anti-seize and thread protectant for these nuts? Don't forget to add on some Fair Wind Screw Lube.
| Nominal Size | Width Across The Flats | Thickness |
| 1/4" | 7/16" | 5/32" |
| 5/16" | 1/2" | 3/16" |
| 3/8" | 9/16" | 7/32" |
| 1/2" | 3/4" | 5/16" |
| 5/8" | 1 5/16" | 3/8" |

Good product and speedy delivery
Great product, fast shipping, thanks again.
Silicon Bronze Hex Jam Nuts
Good Products great service
Needed some nuts and washers to back my rudder shoe bolts. Needed them fast. Got ‘em.
Silicon Bronze Hex Jam Nuts
Great product as usual. Fast shipping. Love that I can order only what I need.
Tried our usual sources for silicon bronze and came up empty.
Popped in to Fair Wind, who had product in stock.
The items were beautifully packed, and are now installed on a customer’s boat.
Thank you, Fair Wind!
- 5 stars: 16 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 star: 0 (0%)
Good product and speedy delivery
Great product, fast shipping, thanks again.
Silicon Bronze Hex Jam Nuts
Good Products great service
Needed some nuts and washers to back my rudder shoe bolts. Needed them fast. Got ‘em.
Silicon Bronze Hex Jam Nuts
Great product as usual. Fast shipping. Love that I can order only what I need.
Tried our usual sources for silicon bronze and came up empty.
Popped in to Fair Wind, who had product in stock.
The items were beautifully packed, and are now installed on a customer’s boat.
Thank you, Fair Wind!
Prompt shipping, parts in stock, reasonable price.
excellent in all respects
I was extremely impressed by speed with which my order was shipped. And the quality of the materials is top-notch. I will order through Fair Wind again.
Cant beat the prices and quality! Shipping was fast too
Fair Wind Fasteners has it all. Large selection of quality marine fasteners. Quick service. Fast shipping. Great customer appreciation. Best of all they don’t require you to buy boxes, you can buy just what you need. Our new go to stop for fasteners.
You were so amazing to speak with snd so very understanding h of our unique situation having to be shipped so far away to such a remote place. Thank you. We will highly recommend you to all our boating friends.
Edward and Jody Hendricks from Ketchikan Alaska.
Excellent services
I tried in all the marine supply stores and hardware stores in Annapolis to find bronze bolts, washers, and nuts to replace a broken bolt on my stuffing box. I had no luck at all anywhere, even in this boating community. I found Fair Winds Fasteners online and had my stuff in 4 days. A good price and reasonable shipping.