Why do plumbing washers have letters and numbers on them?

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20 Volt Cordless 4-in-1 18-Gauge 2″ Flooring Nailer, 57% OFF

20 Volt Cordless 4-in-1 18-Gauge 2″ Flooring Nailer, 57% OFF

20 Volt Cordless 4-in-1 18-Gauge 2″ Flooring Nailer, 57% OFF

DANCO 5/8 in. Flat Faucet Washers (10-Pack) 88574 - The Home Depot

Why do plumbing washers have letters and numbers on them?

DANCO 5/8 in. Flat Faucet Washers (10-Pack) 88574 - The Home Depot

20 Volt Cordless 4-in-1 18-Gauge 2″ Flooring Nailer, 57% OFF

american standard 3 handle shower, balancing C/H water

20 Volt Cordless 4-in-1 18-Gauge 2″ Flooring Nailer, 57% OFF

20 Volt Cordless 4-in-1 18-Gauge 2″ Flooring Nailer, 57% OFF