520/530 Chain Identification

Here is a diagram that can be used to distinguish 520 and 530 drive chains.

By using a scale or caliper to measure the roller width between the inside plates, they can be easily identified.

Nominal Dimensions Are:

520 = 1/4" - (0.25") - [6.35mm]

530 = 3/8" - (0.38") - [9.52mm]

• Both chains are standard #50 pitch of 5/8" - (0.625") - [15.88mm]

520 vs 530 chain identification