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What size hex wrenches to carry(5 posts)

What size hex wrenches to carryNewDayNewWay
Dec 7, 2002 4:23 PM
I saw a post below about someone carrying 4, 5, and 6 mm hex wrenches. I've only been carrying 4 and 5 mm on my rides, so I thought I should double check things to make sure I have everything I need. I looked over all the Ultegra components on my bike. It appears that these are the only size hex wrenches needed for anything (either on the road or working on the bike in the garage):

* 5 mm covers everything except what is listed below

* 4 mm is needed for pulley wheels and brake pads

* 3 mm is needed for the metal clamps that screw onto the down tube to hold the ends of cable housing, for a hex screw at the pivot point for the brakes, and to adjust the tension on my pedals

* 2 mmm is needed for a hex screw on the back part of each brake pad (what is this for?), and for a hex screw at the pivot point where the cable attaches to the brake

* 8 mm is needed for the crank bolt

That's all I could find. No where did I find any hex bolts that require 6 mm, so I guess I'm safe in not carrying a 6 mm on the road. I should carry a 3 mm for my pedals. I'm not concerned about my crank bolt coming loose.
:What size hex wrenches to carry..4,5 & 6...gogene
Dec 7, 2002 4:34 PM
...clamp bolts on some stems and seat adjustment bolt on some seatposts are 6mm.
re: What size hex wrenches to carryJuanmoretime
Dec 7, 2002 4:39 PM
The only item I have ever seen on a bike that would require a six was the wedge bolt on some quill stems and the tensioner, stem and threadless headset, for the plug on my Reynolds Ouzo Pro fork. The 2mm on the brake arch is for centering the caliper.
and the pinchbolt on a Forgie stem, and seat adjustment bolt....gogene
Dec 7, 2002 10:28 PM
..on a Zoom seatpost. I guess my post should have said, "you should carry whatever sized wrenches that you will need to fix a problem in the field. Check your bike to see what sizes your critical fittings are".
I carry a Park Mt-1 tool, has everything I need ! (nm)Bill J Pappas
Dec 8, 2002 8:44 AM