Bicycle Mechanics - Aftermarket stem bolts
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03-30-09, 08:51 AM
I have a Bontrager Race stem now on my Trek. I had a stem recall from an Icon stem that only had one bolt.
The Bontrager looks ok, eventually I'll upgrade to a four-bolt.
For now, I am wondering, does somebody make aftermarket Titanium or B-7 grade hex bolts for stems?
I wouldn't mind spending a few bucks for peace of mind.
03-30-09, 10:08 AM
WARNING DEPT: Stay away from PurelyCustom.com - which offers such items as after-market bolts and such in a bunch of anodized colors. While they look nice, they break like glass! Caveat Emptor.
Racebolts.com. You'll have to figure out the specs yourself because they're a bolt shop, not a bike shop. Good stuff, however. OTOH, realistically your local hardware store may have a B-7 grade bolt...
03-30-09, 10:28 AM
Steel bolts are stronger than Ti bolts and you can get suitable stainless steel metric bolts at many home centers or hardware stores. Stem bolts don't break because they are too weak, they break because they corrode from sweat or rain/salt exposure.
03-30-09, 10:51 AM
...they break because they corrode from sweat...
Stem bolts sweat?? :D
03-30-09, 11:02 AM
I've had good luck at Lowe's replacing my stem bolts with stronger capped end hex head bolts. I also replaced the bolts that came with my BB7 disc brakes.
03-30-09, 11:30 AM
Stem bolts sweat?? :D
Mine do. Where else could it come from? ;)
03-30-09, 09:03 PM
Whoa thanks for the advice on those bad bolts and advice on the good ones....
Hmm, I though Ti was stronger.
B-7 is impressive stuff. I made a custom mount for a two stroke engine I have it mounted on a mountain bike. I'd probably use that B-7 before anything at Lowe's.
I snapped 3 or 4 Hardware store bolts because the engine torqued in its mount. Long story. They were Ace Hardware, their stuff usually rocks. The bolts I think had three hash-marks if I remember correctly.
The B-7 is used to mount boilers, pressure guages and all sorts of insane stuff. It bends before
breaking, but it's not easy to bend. It's 125,000 PSI rated
Mcmaster-Carr.com totally rocks, it would probably take you longer to figure the specs out, but they shipped me the 6MM fine thread rod and I had it the next day. It was a three dollar item...
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