I need to buy 4 of these bolts. They're from a carrera 2

>>1156091
Maybe tell us where you live?

>>1156102
England

Found some that look similar, although there's no dimensions on the ones I ordered.

Mods can delete this, or I'll update if they don't fit.

This didn't really deserve to be a thread, but I posted before I looked for a qtddtot

>>1156091
torx bolt, but I haven't seen one with a sunken head with a shell on it. Normally I take one to the local hardware store, find a nut that fits, then use that nut to find a bolt.

a bicycle store
because its a bicycle part
this is nowhere near a standard fastener and you wont find one in a hardware store or even a fastener store

bring the part to a bike shop, or grab the carrea bike schematic and find the part number

>>1156091
are you sure is 0,5mm pitch? looks more like 1mm

>>1156316
This anon is correct. If that screw is 11mm long there should be roughly 16 threads; there are only about 9. And when you figure out what screw it really is, you can get any m8 screw you want and cut it off to 11mm. This IS /diy/ after all.

>>1156091
Google/ebay/whatever crank spider bolts. That's what that looks like.
How did you loose/break 4 of them?

>>1156091
Work out what day your local council does junk collection, if it's a fixed day -> get your allen key set and jump in your car on the night before -> ride around at night and find a few bikes being thrown out and take the little screws. They look like either near the rear derailleur or the ones that hold the front ring gears to the pedal crank.

Or hope you live in a city large enough with enough industry to warrant a 'bolt shop' where they have all weird sizes of shit in one place. They can usually be found where mechanics congregate.

>>1156178
Dunno how the UK is, but I agree with this anon. Worked at a hardware store for several years and every so often we would have people come in for bike fasteners with no such luck. Most bike shops have spares in their workshop so they are worth hitting up.

>>1156091
You could always lathe some bolts

McMaster-Carr

>>1156091
https://www.mcmaster.com/#94500a241/=174pupv

$4.61 for 10

Buy a screw with everything similar but length and nut. Step two run nut all the way onto screw cut to length needed. Step three undo nut, done thread should be fine.

Looks like a bicycle chainring bolt or a derailleur hanger bolt.

File: 1488679327578.jpg (18KB, 320x320px) Image search: [Google]

18KB, 320x320px

>>1156091
FASTENER STORES EXIST FOR A REASON.

WHY DO PEOPLE HAVE TROUBLE UNDERSTANDING THIS?

File: bg-service.jpg (171KB, 900x900px) Image search: [Google]

171KB, 900x900px

>>1160705
Bikes have tones of unusually sized and threaded bolts that you'll never find at a regular hardware store.

>>1156091
Go to a bicycle shop that does repairs or sells refurbished bikes. Their mechanics will probably have some spares. Some community / co-op type shops will have bins of special bike bolts you can go through yourself.

>>1156091
Visit a decent bike shop bike a decathalon or contact Carrera. I'm sure you'll be able to get help.

CRANK
SPIDER
BOLT

http://www.tme.eu/nl/details/b8x10_bn612/bouten/bossard/1420496/

>>1156091
Search "chainring bolts", and check out /n/ for bicycle help.