Metric Bolt Kit

I find it handy to have a variety of metric stainless bolts around when assembling bicycles. My kit is running a little light and some other friends wanted similar ones, so we put together a bulk order from McMaster Carr. I thought I’d document the kit that we put together while I had the part numbers handy.

This spreadsheet shows a nice kit which can be split among 4 friends and costs about $30 each at today’s pricing:

Description Part # Per Pkg PkgPrice PkgQty BoltQty PerPerson Why get it?
M5 x 8mm, socket cap 91292A191 100 6.83 1 100 25 $1.71 water bottles
M5 x 10mm, socket cap 91292A124 100 7.68 2 200 50 $3.84 fenders
M5 x 12mm, socket cap 91292A125 100 7.29 1 100 25 $1.82 racks
M5 x 16mm, socket cap 91292A126 100 7.44 1 100 25 $1.86 SKS fenders
M5 x 20mm, socket cap 91292A128 100 7.76 1 100 25 $1.94 fenders + racks on same bolt
M5 x 10mm, button head 92095A208 100 11.41 1 100 25 $2.85 fenders (direct mount)
M5 x 16mm, button head 92095A212 50 7.91 2 100 25 $3.96 fenders (direct mount)
M6 x 18mm, socket cap 91292A136 50 $8.57 1 50 12.5 $2.14 canti, seatpost binder
M5 nylock nut 93625A200 100 7.67 1 100 25 $1.92
M5 washers 93475A240 100 2.81 4 400 100 $2.81
M5 fender washers 91116A140 100 5.34 2 200 50 $2.67
M6 washers 93475A250 100 3.4 2 200 50 $1.70
$29.22

There are a few changes from my old kit above. I dropped the longer M5 bolts because I don’t use them very often. I added some M6 bolts in a length that I find useful for cantilever brakes and seatpost binders. I also added some button head M5 bolts in the sizes that I use for direct mounting fenders.

5 Comments

  1. This is brilliant. I wanted to do the exact same thing, but I hadn”t come up with a proper list of hardware yet. This should be a good start.

  2. Jimmy Livengood says:

    This is a great list, and at some point I”ll have to break down and make an order. I”d like to get some more flange button head screws, I love those for direct-fender mounting, they make me feel better about not using a washer.

  3. AlexWetmore says:

    Jimmy — I over ordered slightly I think. If I have an extra kit I”ll drop you a line. I thought about over-ordering a lot (knowing that you and a few others would also be interested), but didn”t want to put too much on my CC.

  4. Tarik says:

    I can”t read the why! Why Alex why?
    No m4? No m8? I find those m4′’s useful for random fender/reflector mounting and m8′’s for, uh, maybe just the seatpost binders on the kelly frames I have. Hmm, maybe thats why I don”t ever go through them.

  5. AlexWetmore says:

    I just never use much M4 stuff, so I don”t mind paying hardware store prices.

    My blog cut off the Why, but you can read it in the RSS feed. I don”t know why it does that.