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Author: Subject: Where to buy M4 Aluminium set screws?
nick205

posted on 13/5/16 at 09:55 AM Reply With Quote
Where to buy M4 Aluminium set screws?

Hi All,

Just had my faithfull steel MTB frame shot blasted and powder coated in White. It looks stunning and I'm now rebuilding the bike. It has a number of M4 threaded bosses for things like water bottle holders and racks. To close the threaded holes off from the elements I'd like to fit M4 x 8 mm Aluminium socket cap set screws - ideally anodised Black. I've searched the web, including eBay, but what I can find seems pricey to buy.

Can anyone point me towards a source of parts at sensible prices?

Happy to purchase online and get them delivered to me as well.

Thanks,
Nick






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loggyboy

posted on 13/5/16 at 10:03 AM Reply With Quote
Stainless instead of aluminum?
M4 GWR Colourfast® Cap Head Screws - A2 Stainless Steel - Coloured Socket Bolts





Mistral Motorsport

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nick205

posted on 13/5/16 at 10:15 AM Reply With Quote
Thanks for the link - being a fussy bugger the Aluminium ones are a lot lighter that stainless steel ones






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minitici

posted on 13/5/16 at 10:30 AM Reply With Quote
How about some funky rainbow coloured M4 Titanium fasteners?

eBay Item

Also available in black

eBay Item

Or black with tapered heads

eBay Item

[Edited on 13/5/16 by minitici]

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gremlin1234

posted on 13/5/16 at 10:38 AM Reply With Quote
again, titanium, I found these from china
http://www.aliexpress.com/item/Titanium-Set-Screws-M4x6-DIN-916-Cup-Point/32362786293.html

else get some threaded ali bar and cut a screwdriver slot.

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Grimsdale

posted on 13/5/16 at 11:58 AM Reply With Quote
Why aluminium?
Unless you can exclude all damage to the anodising (which will be very difficult with a hard coating on a soft metal), you'll suffer from galvanic corrosion. Small reactive metal in large frame of less reactive metal (ali screw in steel) gives a very high rate of reaction.

I'm not a cyclist, but i assume a steel bike is heavier than an aluminium bike (or others), so shaving off a few grams seems insignificant.

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40inches

posted on 13/5/16 at 12:04 PM Reply With Quote
ProBolt sell them, if you have deep pockets.
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AdamR20

posted on 13/5/16 at 12:17 PM Reply With Quote
Check they are actually M4... I've never seen anything other than M5 for bottle cage bolts, that's all (M5 bolt is 4mm allen key head if it's a cap screw).

I sell them at work: http://www.tartybikes.co.uk/aluminium_bolts/c522.html

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Rosco86

posted on 13/5/16 at 12:55 PM Reply With Quote
go for plastic m4 bolts if your chasing 0.01 of a gram





My Build Thread

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dinosaurjuice

posted on 13/5/16 at 01:30 PM Reply With Quote
you need some 'silicon tidds'

made for this exact purpose!

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nick205

posted on 13/5/16 at 07:31 PM Reply With Quote
Having worked on the bike this arvo you could be right with M5 after all...might make them easier to find.






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nick205

posted on 13/5/16 at 08:36 PM Reply With Quote
Just been out and checked and yes they're M5 bolts!

Good to know and the tarty bikes site looks good as well.

Thanks,
Nick






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