BMX - Crank bolts

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.



PDA

View Full Version : Crank bolts

yellowjeep
04-01-09, 11:01 AM
Where can I get crank bolts such as this:

http://img11.imageshack.us/img11/5624/dsc08248.jpg



Danscomp doesn't have anything like it. The bolt pictured is from my roommate's bike and they fit my new to me Haro 3 pc cranks but I cant find anything like it.

dervish
04-01-09, 11:20 AM
check your lbs to see if they have any laying around? thats usually what i do when i need random spare parts
CMcMahon
04-01-09, 11:23 AM
Those are generally 3/8" 24tpi bolts, available at any hardware store.

Street rider
04-01-09, 01:21 PM
i had those as the crank arm bolts on my old cranks...gave em to a friend though lol
yellowjeep
04-01-09, 02:23 PM
I forgot to mention that they are 6mm hex. It doesn't seem like a hardware store item but I guess it wouldn't hurt to check. To give some perspective:

http://img7.imageshack.us/img7/1462/dsc08254l.jpg
CMcMahon
04-01-09, 02:39 PM
The head doesn't matter for the sprocket bolt; I've used non-allen bolts before without any issues for that application.
Street rider
04-01-09, 05:21 PM
mine were silver :)
yellowjeep
04-01-09, 06:53 PM
If you look at it though the head of the bolt makes contact with the edge of the hole for the spindle. Its not like most road or mtb cranks that I am more familiar with where the bolt is recessed. A normal bolt wouldn't work.
CMcMahon
04-01-09, 07:04 PM
The server the picture is hosted on is blocked at my work, but I can't seem to picture what you're talking about. Do you mean that the head of the bolt makes contact with your bottom bracket shell?
yellowjeep
04-01-09, 08:19 PM
No it the edge of the hole on the cranks. I'll try hosting though BF
yellowjeep
04-01-09, 08:20 PM
http://www.bikeforums.net/attachment.php?attachmentid=99724&stc=1&d=1238638826
CMcMahon
04-01-09, 11:15 PM
Oh. This whole time I thought that this was about the sprocket bolt for some reason. For that, just get a thick washer (preferably a machined bushing) and cover the whole end of the arm.