Which chain fits the DeWalt DCCS620?

Both do. The DeWalt DWO1DT612 is the factory part, and the Proven Part chain lists the DCCS620 as a fit with the same 3/8-inch low-profile pitch, .043 gauge and 45 drive links.

Is the Proven Part chain as safe as the DeWalt chain?

The DeWalt chain is certified to ANSI low-kickback standards with ramped depth gauges. Proven Part does not state a low-kickback rating, so treat it as a standard semi-chisel chain.

The DeWalt chain specifies hard-chromed, heat-treated cutters and Centri-Lube oil channels, which point to longer life. Proven Part gives no hardening or lubrication details, so its wear life is unproven.

Is the Proven Part chain worth it over the DeWalt?

At $5.99 at Amazon as of November 5, 2026, it costs little, and it fits more saws. If you want the OEM part and kickback protection, pay for the DeWalt.

Will the Proven Part chain fit my Milwaukee M18 Fuel saw?

Proven Part lists the Milwaukee M18 Fuel as a fit. Check that your bar is 12 inches with a 3/8-inch low-profile, .043 gauge, 45-drive-link setup before buying.

Can I return the DeWalt chain if it does not fit?

The DeWalt listing is marked final sale and not eligible for return, so confirm your model first. The Proven Part chain is sold through Amazon, whose return policy applies.

DeWalt DWO1DT612 12-Inch Chainsaw Chain vs Proven Part 12-Inch Chainsaw Chain

Buy the Proven Part chain if you want the lowest cost and a chain that fits several 12-inch saws, including the DeWalt DCCS620. Buy the DeWalt DWO1DT612 if you want the OEM part with low-kickback certification and Centri-Lube, and you only run DeWalt 20V saws. The Proven Part is $5.99 at Amazon as of November 5, 2026; no price was given for the DeWalt chain.

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