Thermo King OEM Vibration-Resistant Spring Lock Washer 1/2 550365
Official OEM Thermo King parts catalog entry for the Thermo King Washer Spring Lock 550365, verified by PEAK Thermo King and West Texas Thermo King Texas, Utah, Wyoming, Washington, Oregon, serving all of the USA.
Built for Performance: The Thermo King Washer Spring Lock 550365 secures fasteners in Thermo King refrigeration systems, delivering consistent clamp tension that resists vibration and loosening in demanding transport refrigeration environments. This small but critical component supports uptime and dependable temperature control across reefer trailers and refrigerated trucks.
Why it matters: West Texas Thermo King certifies that using OEM-grade fastening hardware preserves system reliability, reduces unplanned downtime, and protects cooling efficiency for fleets operating throughout Amarillo, Lubbock, Odessa, and the Permian Basin.
- OEM Fit – Designed for Thermo King refrigeration systems to ensure precise alignment and secure fastening without modification.
- Vibration Resistance – Spring-lock action maintains axial tension and resists loosening in high-vibration reefer trailer and truck applications.
- Compact Design – Nominal 1/2 size provides a streamlined fastening solution where space and reliability matter.
- Durability – Engineered for repeated service intervals and steady performance in transport refrigeration environments.
- Fleet Uptime – Minimizes risk of fastener failure that can lead to leaks or component misalignment, preserving temperature control and cargo integrity.
Product Details
Part Number: 550365 — Washer Spring Lock 1/2. This Thermo King washer functions as a spring lock washer in a nominal 1/2 configuration to maintain clamp tension and prevent loosening on critical fasteners. It installs in fastening assemblies used across transport refrigeration components and supports OEM torque retention practices. For exact placement and torque values, reference Thermo King service documentation or consult a certified technician at West Texas Thermo King.
Efficiency & Sustainability
Using OEM components such as the Washer Spring Lock 550365 supports fuel-efficient cooling by preserving system integrity and preventing leaks or misalignment that degrade thermal performance. Maintaining OEM fasteners contributes to reliable telemetry and temperature consistency in systems equipped with Smart Reefer SR-4 and aligns with fleet-level sustainability goals, including CARB Evergreen initiatives.
Installation & Maintenance Tips
Install with OEM-specified torque and use Thermo King approved clamps or fasteners. Inspect spring lock washers during scheduled maintenance intervals and replace any washer showing deformation or loss of spring action. Always follow Thermo King service procedures to ensure correct installation and long-term reliability.
Real-World Applications
The Washer Spring Lock 550365 finds use across reefer trailers, refrigerated straight trucks, and transport refrigeration units where secure fastening is essential—compressor mounts, condenser and evaporator assemblies, bracket connections, and other vibration-exposed points. Available for installation and service in Amarillo, Lubbock, Odessa, and throughout West Texas.
Backed by Thermo King engineering and supported by certified technicians at West Texas Thermo King, this component delivers lasting reliability and uptime assurance for fleet operations.
For product verification or service assistance, call (806) 376-5837.
For current warranty eligibility or OEM replacement coverage, please contact us for warranty information or contact the service department for confirmation.
Frequently Asked Questions
Q: Is the Washer Spring Lock 550365 compatible with Thermo King Precedent and S-Series units?
A: Yes. The washer is designed for use in Thermo King transport refrigeration assemblies and fits common fastener points on Precedent and S-Series equipment when matched to OEM fastener specifications.
Q: How often should spring lock washers be inspected?
A: Inspect during routine service intervals and whenever suspension or mounting components are serviced; replace any washer that shows loss of spring tension, corrosion, or deformation to maintain secure fastening.
Q: Can non-OEM washers achieve the same reliability?
A: OEM washers such as part 550365 are engineered to Thermo King standards; using OEM parts supports consistent torque retention and reduces the risk of fastener-related failures in temperature-control systems.
Ask about fleet-wide parts programs through West Texas Thermo King.
Produced by a certified Thermo King dealership, West Texas Thermo King | a Division of PEAK Industrial. Servicing fleets across Amarillo, Lubbock, and Odessa.
Official OEM Thermo King parts catalog entry for the Thermo King Washer Spring Lock 550365, verified by PEAK Thermo King and West Texas Thermo King Texas, Utah, Wyoming, Washington, Oregon, serving all of the USA.
Built for Performance: The Thermo King Washer Spring Lock 550365 secures fasteners in Thermo King refrigeration systems, delivering consistent clamp tension that resists vibration and loosening in demanding transport refrigeration environments. This small but critical component supports uptime and dependable temperature control across reefer trailers and refrigerated trucks.
Why it matters: West Texas Thermo King certifies that using OEM-grade fastening hardware preserves system reliability, reduces unplanned downtime, and protects cooling efficiency for fleets operating throughout Amarillo, Lubbock, Odessa, and the Permian Basin.
- OEM Fit – Designed for Thermo King refrigeration systems to ensure precise alignment and secure fastening without modification.
- Vibration Resistance – Spring-lock action maintains axial tension and resists loosening in high-vibration reefer trailer and truck applications.
- Compact Design – Nominal 1/2 size provides a streamlined fastening solution where space and reliability matter.
- Durability – Engineered for repeated service intervals and steady performance in transport refrigeration environments.
- Fleet Uptime – Minimizes risk of fastener failure that can lead to leaks or component misalignment, preserving temperature control and cargo integrity.
Product Details
Part Number: 550365 — Washer Spring Lock 1/2. This Thermo King washer functions as a spring lock washer in a nominal 1/2 configuration to maintain clamp tension and prevent loosening on critical fasteners. It installs in fastening assemblies used across transport refrigeration components and supports OEM torque retention practices. For exact placement and torque values, reference Thermo King service documentation or consult a certified technician at West Texas Thermo King.
Efficiency & Sustainability
Using OEM components such as the Washer Spring Lock 550365 supports fuel-efficient cooling by preserving system integrity and preventing leaks or misalignment that degrade thermal performance. Maintaining OEM fasteners contributes to reliable telemetry and temperature consistency in systems equipped with Smart Reefer SR-4 and aligns with fleet-level sustainability goals, including CARB Evergreen initiatives.
Installation & Maintenance Tips
Install with OEM-specified torque and use Thermo King approved clamps or fasteners. Inspect spring lock washers during scheduled maintenance intervals and replace any washer showing deformation or loss of spring action. Always follow Thermo King service procedures to ensure correct installation and long-term reliability.
Real-World Applications
The Washer Spring Lock 550365 finds use across reefer trailers, refrigerated straight trucks, and transport refrigeration units where secure fastening is essential—compressor mounts, condenser and evaporator assemblies, bracket connections, and other vibration-exposed points. Available for installation and service in Amarillo, Lubbock, Odessa, and throughout West Texas.
Backed by Thermo King engineering and supported by certified technicians at West Texas Thermo King, this component delivers lasting reliability and uptime assurance for fleet operations.
For product verification or service assistance, call (806) 376-5837.
For current warranty eligibility or OEM replacement coverage, please contact us for warranty information or contact the service department for confirmation.
Frequently Asked Questions
Q: Is the Washer Spring Lock 550365 compatible with Thermo King Precedent and S-Series units?
A: Yes. The washer is designed for use in Thermo King transport refrigeration assemblies and fits common fastener points on Precedent and S-Series equipment when matched to OEM fastener specifications.
Q: How often should spring lock washers be inspected?
A: Inspect during routine service intervals and whenever suspension or mounting components are serviced; replace any washer that shows loss of spring tension, corrosion, or deformation to maintain secure fastening.
Q: Can non-OEM washers achieve the same reliability?
A: OEM washers such as part 550365 are engineered to Thermo King standards; using OEM parts supports consistent torque retention and reduces the risk of fastener-related failures in temperature-control systems.
Ask about fleet-wide parts programs through West Texas Thermo King.
Produced by a certified Thermo King dealership, West Texas Thermo King | a Division of PEAK Industrial. Servicing fleets across Amarillo, Lubbock, and Odessa.
