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.