This is mostly relevant to shop or co-op folks. I finally found an affordable axle spacer (washers to go between cones and locknuts for correcting OLD spacing, for example when replacing worn cones with new ones that have a slightly different stack height, or respacing a hub). ASMC Industrial sells 3/8 x 5/8 x 0.063 and 0.032 washers in stainless. These are roughly 9.9 ID x 15.9 OD x 1.5 and 0.5mm thickness in dimension. They fit all axles cleanly except 10mm axles you'll have to hit the ID with a rat tail file or a dremel with a conical stone or sanding drum. Left is the thin one, middle is the 1mm expensive $1+ each wheels mfg spacer and right is the thick one. They're 16 cents a piece shipped, sold in packs of 100. Part numbers: 0000-101700 thin, 0000-103969 thick.
by 802bikeguy_com