Washer — Lock washer 1/2
EMD Part No.: 103323DLW Part No.: 20390040
Washer — Lock washer 1/2
Application: EMD water pump assemblies
Part of our Water pump product line
The Washer — Lock washer 1/2 is identified by EMD Part No. 103323 and DLW Part No. 20390040. EMD parts references identify 103323 as a 1/2-inch spring lock washer, while the EMD water-pump assembly parts listing specifies it as Washer — Lock 1/2. The corresponding DLW reference is 20390040. The EMD water-pump assembly listing specifies 8 Nos. of this washer.
How This Part Works
The Washer — Lock washer 1/2 is a locking fastening component used in the EMD water-pump assembly. It is installed with the applicable 1/2-inch fastener to help maintain the secured condition of the threaded connection during operation. The washer forms part of the water-pump assembly fastening arrangement.
Signs It's Time to Replace
- Loss of locking effectiveness: deterioration or flattening of the lock washer can reduce its intended locking function
- Visible deformation: excessive bending, flattening, or other deformation should be assessed during inspection
- Corrosion: significant corrosion or material deterioration should be evaluated for serviceability
- Physical damage: cracking or other visible damage can affect the washer's suitability for use
- Improper fit: the replacement washer should match the specified 1/2-inch locking-washer configuration
Apex focuses on EMD engine components and water-pump system parts for EMD applications. The Washer — Lock washer 1/2 is identified by EMD Part No. 103323 and DLW Part No. 20390040, allowing customers to source this fastening component using established EMD and DLW references. Its identification by the specific 1/2-inch lock-washer configuration helps customers select the correct washer for the applicable EMD water-pump assembly.
See all Water pump parts →- Engine Compatibility
- EMD 645 & EMD 710 Series
- Applications
- Locomotive · Marine · Power Generation
- Quality Standard
- ISO 9001:2015 Certified · OEM Grade
OEM GradeExport QualityReady Stock
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