Originally Posted by
2manybikes
5-6-7-8 speed chains can use the pin again.
No. Shimano 8-speed chains (HG-XX or IG-XX), often advertised as 7/8-speed or even 6/7/8-speed, require a specific joining pin (or an aftermarket master link) and should NOT have a standard pin reused. Older, wider 5 and 6-speed chains can reuse their pins.