Nut — Hex lock 5/8-18

EMD Part No.: 8028724DLW Part No.: 20355191

Nut — Hex lock 5/8-18

Application: EMD 645 and 710 series water pump assemblies

Part of our Water pump product line

The Nut — Hex Lock 5/8-18 is identified by EMD Part No. 8028724 and DLW Part No. 20355191. EMD parts references identify 8028724 as a 5/8-18 self-locking nut, while EMD water-pump component listings identify it as the Hex Lock 5/8-18 Nut. The part is listed as a component of EMD water-pump assemblies and is associated with both EMD 645 and 710 series applications. For procurement and maintenance, the nut should be identified by the correct EMD and DLW part numbers and the specified 5/8-18 thread size.

How This Part Works

The Nut — Hex Lock 5/8-18 is a threaded fastening component used within the EMD water-pump assembly. Its self-locking design is intended to help maintain the secured condition of the threaded connection during operation. Within the water-pump component arrangement, EMD 8028724 is listed alongside other pump components including the water-pump impeller, housing, seal retainer, seals, shaft, and associated hardware.

Signs It's Time to Replace

  • Thread damage: damaged or deformed internal threads can affect proper installation and secure fastening
  • Loss of locking function: deterioration of the self-locking feature can reduce the nut's ability to resist loosening
  • Visible damage: cracking, deformation, or other physical damage should be assessed before reuse
  • Corrosion: significant corrosion can affect the condition and serviceability of the nut
  • Improper fit: a nut that does not correctly match the specified 5/8-18 threaded connection should not be used

Apex focuses on EMD engine components and water-pump system parts for EMD applications. The Nut — Hex Lock 5/8-18 is identified by the specific EMD Part No. 8028724 and DLW Part No. 20355191, allowing customers to source this fastening component using established EMD and DLW references. Its identification by part number and 5/8-18 thread specification helps customers select the correct nut for the applicable EMD water-pump assembly.

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Engine Compatibility
EMD 645 & EMD 710 Series
Applications
Locomotive · Marine · Power Generation
Quality Standard
ISO 9001:2015 Certified · OEM Grade
Nut — Hex lock 5/8-18 – EMD Part No. 8028724 – OEM locomotive engine component
OEM GradeExport QualityReady Stock
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