PEM Nut Kits and Shear Pins Kits?

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deandome

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mtnman, where did you get the metal 'countersink reinforcements', and how are they fastened/implanted in the outer tube/nosecone?
 

mtnmanak

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mtnman, where did you get the metal 'countersink reinforcements', and how are they fastened/implanted in the outer tube/nosecone?
Those are Lumadyne nuts/washers. You can find them at Apogee:


There was a time when you could buy them straight from the manufacturer and I got a whole bunch of them in bulk. Now, it appears you can only get them from Apogee. Too bad, they are pretty slick and Apogee is selling them at a premium.

Once my current supply is gone, I am not sure I will buy them at $5 a pair. I have been looking around for a replacement, but have not found one yet.
 

teepot

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25 or 50, depends on what quantity said thread/size is sold by Mcmaster. I don't plan to split up quantities if that makes sense.
Depending on the cost I would be interested in the sizes mentioned in a previous post.
 

Idunno

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I'm assuming by now you placed the order. But if for some reason you have extras i'll give some a try since i'm almost out of rivets. Current project is 3" so I guess some 4/40? And whatever the next smaller size is for a 54mm.
 

deandome

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Not to poop on the fun & comradeship this kinda thing brings out, but I needed pem nuts now, and got 2 sizes of knockoff 'self cinching nuts' on Amazon @ $8.00 per bag of 50 https://www.amazon.com/dp/B08XYJXJRC?psc=1&ref=ppx_yo2_dt_b_product_details

Delivered free in 2 days, they seem perfect enough for me, 'cept you can select 3 different 'thicknesses' of the toothed, grippy-sections, and I went with the thinnest one. No biggie, but I'd recommend you go with the medium-size
 
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