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Carbon Fiber M6 Bronze Inserts for Mast and Fuse Connection?

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Created by FoilWays 6 months ago, 14 Jun 2025
FoilWays
176 posts
14 Jun 2025 4:35AM
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What type of bronze M6 insert should I use if I'm plan to modify a mast foot, recast it, to fit a socket-type joint? I'm talking the type of joint that North, Axis, Code and Lift use.

DWF
707 posts
14 Jun 2025 5:26AM
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These brass barrel nuts are used in all Tuttle windsurf fins. Windsurf shops can hook you up.

TooMuchEpoxy
419 posts
14 Jun 2025 9:31AM
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M8 barrel nuts are impossible to find - but that's what you want. The m6 are easy enough to find but when I convert a mast to North I have to fabricate my own with drill press, vice, drill bit, tap, and stainless rod. For m8 I use a 10mm stainless rod which works well. I burn through taps pretty quick. I've done half a dozen masts like this and it strong enough that the plate end comes apart(never had the plane end fail)

FoilWays
176 posts
28 Jun 2025 2:42AM
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Thanks guys. I forgot to come back to this thread. I need M6. A lot of manufacturers are not using barrels that go perpendicular to bolts... they are using vertical inserts that go in line with the bolts themselves. I like this idea because there it more thread, BUT, they also have to be anchored in VERY well... and I'm don't know exactly how.

I think the idea of using barrels might be the best way to go about this. Is any manufacturer making mast with M6 barrels? I know my Axis masts use M8 barrels, and yes, those are near impossible to find to buy extras.

jdfoils
431 posts
28 Jun 2025 2:49AM
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Slingshot sells m6 barrel nuts in 316 stainless. As spares for phantasm masts.
Brass equivalent should be available at you local chandelry

Mark _australia
WA, 23433 posts
28 Jun 2025 4:36PM
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M6 grows on trees

Just change them on occasion as corrosion swelling makes them split your carbon laminate eventually - and that timing varies... seen it in 2 seasons, or 20yrs



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"Carbon Fiber M6 Bronze Inserts for Mast and Fuse Connection?" started by FoilWays