Silicon Bronze Acorn Nuts

Silicon Bronze Acorn Nuts

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These acorn nuts (often called cap nuts) are 655 Silicon Bronze alloy and machined in the USA. They're great for capping off keel bolts, finishing visible bronze knees, or for any other purpose where aesthetics are important. They come un-polished, but polish up very easily.

Other sizes not listed here are available in any of our fasteners. Just get in touch if you can't find the size or type of fastener that you need.

SIZE WIDTH ACROSS FLATS  TOTAL HEIGHT
10-24 0.361" (9.18mm) 0.310" (7.87mm)
1/4"-20 0.431" (10.95mm) 0.463" (11.75mm)
5/16-18 0.510" (12.95mm) 0.527" (13.37mm)
3/8"-16 0.550" (13.97mm) 0.605"(15.37mm)
1/2"-13 0.740" (18.79mm) 0.533" (13.54mm)

 

To go with your Acorn Nuts, don't forget your silicon bronze washers!

Need an anti-seize and thread protectant for these nuts? Don't forget to add on some Fair Wind Screw Lube.

Customer Reviews

Based on 43 reviews
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mathew trujillo
AMAZING

I used some washers and acorn nuts to cover some wedge bolts on a light backplate. This is a house that’s near the ocean so we wanted top notch grade on our washers and acorn cover nuts. They look amazing! Top quality.

R
Robert Wilkinson
Bronze acorn nuts

I was impressed with the quality and delivery time.

B
Benjamin Zartman
Great selection and fast service.

Every hard-to-find bronze fastener--acorn nuts all sizes; square nuts; good variety of bolts of all sizes and lengths, and even bronze nylocks, which I've never seen anywhere else. This is a fantastic resource.

R
Robert Becker
Amazing service

If you need bronze hardware or any top quality marine hardware this is the place to go. Good old fashioned American service here

B
Bob Vivian
Fast Service

My order was filled correctly and arrived very soon. Very happy!!!