Lock WasherThis aftermarket lock washer prevents fasteners from backing off under the constant vibration forklifts see during lift, lower, travel, and load cycles. Split-type lock washers are used throughout forklift assemblies on engine accessories, hydraulic brackets, axle hardware, and mast components. Maintenance shops buy them in bulk because they are single-use items consumed during every rebuild. Independent forklift mechanics and fleet maintenance buyers are typical customers. Sold as a crossover aftermarket replacement, not OEM. Confirm bolt diameter, washer thickness, and material (zinc-plated steel, stainless) match your application before ordering larger quantities for shelf stock.Aftermarket replacement part, cross-references original part number AC01641-01016.Need help confirming fit? Call (562) 693-7748 with your serial number.Part number variants: AC01641-01016, ac01641-01016, AC0164101016, ac0164101016 ⚠ Warning: Some equipment has serial-number breaks that may not be reflected in the catalog. Contact us for clarification before ordering if uncertain.SCR Forklift Parts ships from Whittier, CA with next-day delivery available across the US when needed.