Metric Dimensions
Chain
Pitch
Width
Roller Diameter
415
12.70mm
4.88mm
7.75mm
420
12.70mm
6.35mm
7.75mm
428
12.70mm
7.75mm
8.51mm
520
15.88mm
6.35mm
10.16mm
525
15.88mm
7.85mm
10.16mm
530
15.88mm
9.53mm
10.16mm
532
15.88mm
9.53mm
11.10mm
630
19.05mm
9.53mm
11.91mm
632
19.05mm
9.66mm
12.68mm
Side plate thickness varies with grade and make of chain. As a rule, 1.5 to 2.6 mm. It is important for safety to join chain with the manufacturers correct Rivet Soft Link or Split Spring Link.
Size, Manufacturer, and grade are often stamped on some of the side plates.