Thermo King Split Spring Lock Washer 5/16 Inch 550790
Official OEM Thermo King parts catalog entry for the Thermo King Washer Spring Lock 5/16 550790, verified by PEAK Thermo King and West Texas Thermo King Texas, Utah, Wyoming, Washington, Oregon, serving all of the USA.
Built for Reliability: The Thermo King Washer Spring Lock 5/16 550790 secures critical fasteners across Thermo King refrigeration systems, ensuring consistent clamp force and resistance to vibration for temperature-sensitive transport operations. This OEM-grade lock washer supports uptime and repeatable temperature control across reefer trailers and truck-mounted units.
Key Features & Customer Benefits
- Precision 5/16 Sizing – Fits 5/16-inch fasteners used on Thermo King assemblies for exact, secure installation.
- Spring Lock Design – Maintains tension under vibration to reduce loosening and preserve clamping force during operation.
- OEM Compatibility – Engineered to meet Thermo King service standards for transport refrigeration components and fleet maintenance.
- Corrosion-Resistant Finish – Finished to resist environmental exposure common to reefer trailers and over-the-road applications.
- Compact & Durable – Low-profile design supports precise torque control and long-term reliability in confined assemblies.
- Fleet Uptime Focus – Reduces downtime risk from fastener failure, supporting predictable maintenance intervals and ROI.
Product Details
| Part Number | 550790 |
| Product Name | Thermo King Washer Spring Lock 5/16 |
| Size | 5/16-inch fastener fit |
| Design | Split (helical) spring lock washer |
| Compatibility | Thermo King refrigeration units, reefer trailers, transport refrigeration equipment (Precedent, S-610 series, Smart Reefer SR-4 and similar assemblies) |
Efficiency & Sustainability
This small but critical component supports reliable assemblies that preserve system sealing, reduce rework, and help maintain fuel-efficient cooling. Using OEM Thermo King components like the Washer Spring Lock 5/16 550790 supports preventive maintenance programs and compliance strategies for modern control systems such as Smart Reefer SR-4 and CARB Evergreen initiatives where applicable.
Installation & Maintenance Tips
Install the washer on properly sized 5/16 fasteners and torque to manufacturer specifications. Use OEM-grade flat washers where specified to distribute clamp load. Inspect lock washers during scheduled service intervals and replace any showing deformation or corrosion to maintain secure assemblies and predictable refrigeration performance.
Real-World Applications
The Washer Spring Lock 5/16 550790 secures fasteners across condenser and evaporator mounts, compressor brackets, access panels, and fastener points on reefer trailers and truck-mounted refrigeration units. It supports reliable temperature control for food, pharmaceuticals, and other temperature-sensitive loads. Available for installation and service in Amarillo, Lubbock, Odessa, and throughout West Texas.
Backed by Thermo King’s engineering and supported by certified technicians at West Texas Thermo King, this component delivers lasting performance and uptime assurance for fleet operations.
For product verification or service assistance, call (806) 376-5837.
For current warranty eligibility or OEM replacement coverage, contact us for warranty information at https://www.trailerservicesofwesttexas.com/contact or reach the service department for confirmation.
Frequently Asked Questions
Q: Is this washer compatible with Thermo King Precedent units?
A: Yes. The Washer Spring Lock 5/16 550790 fits 5/16 fasteners commonly used on Precedent-series components and other Thermo King refrigeration assemblies.
Q: How does the washer improve long-term clamp reliability?
A: The split spring design maintains residual tension under vibration, helping prevent nut or bolt loosening and preserving consistent clamp force over time.
Q: Can this part be used on reefer trailers operating in the Permian Basin and West Texas conditions?
A: Yes. The part is specified for transport refrigeration service environments across Amarillo, Lubbock, Odessa, and the Permian Basin when installed per Thermo King guidelines.
Q: Where can fleets source genuine Thermo King part 550790?
A: Certified Thermo King dealerships such as West Texas Thermo King supply OEM parts and provide installation and service support.
Related Resources
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 5/16 550790, verified by PEAK Thermo King and West Texas Thermo King Texas, Utah, Wyoming, Washington, Oregon, serving all of the USA.
Built for Reliability: The Thermo King Washer Spring Lock 5/16 550790 secures critical fasteners across Thermo King refrigeration systems, ensuring consistent clamp force and resistance to vibration for temperature-sensitive transport operations. This OEM-grade lock washer supports uptime and repeatable temperature control across reefer trailers and truck-mounted units.
Key Features & Customer Benefits
- Precision 5/16 Sizing – Fits 5/16-inch fasteners used on Thermo King assemblies for exact, secure installation.
- Spring Lock Design – Maintains tension under vibration to reduce loosening and preserve clamping force during operation.
- OEM Compatibility – Engineered to meet Thermo King service standards for transport refrigeration components and fleet maintenance.
- Corrosion-Resistant Finish – Finished to resist environmental exposure common to reefer trailers and over-the-road applications.
- Compact & Durable – Low-profile design supports precise torque control and long-term reliability in confined assemblies.
- Fleet Uptime Focus – Reduces downtime risk from fastener failure, supporting predictable maintenance intervals and ROI.
Product Details
| Part Number | 550790 |
| Product Name | Thermo King Washer Spring Lock 5/16 |
| Size | 5/16-inch fastener fit |
| Design | Split (helical) spring lock washer |
| Compatibility | Thermo King refrigeration units, reefer trailers, transport refrigeration equipment (Precedent, S-610 series, Smart Reefer SR-4 and similar assemblies) |
Efficiency & Sustainability
This small but critical component supports reliable assemblies that preserve system sealing, reduce rework, and help maintain fuel-efficient cooling. Using OEM Thermo King components like the Washer Spring Lock 5/16 550790 supports preventive maintenance programs and compliance strategies for modern control systems such as Smart Reefer SR-4 and CARB Evergreen initiatives where applicable.
Installation & Maintenance Tips
Install the washer on properly sized 5/16 fasteners and torque to manufacturer specifications. Use OEM-grade flat washers where specified to distribute clamp load. Inspect lock washers during scheduled service intervals and replace any showing deformation or corrosion to maintain secure assemblies and predictable refrigeration performance.
Real-World Applications
The Washer Spring Lock 5/16 550790 secures fasteners across condenser and evaporator mounts, compressor brackets, access panels, and fastener points on reefer trailers and truck-mounted refrigeration units. It supports reliable temperature control for food, pharmaceuticals, and other temperature-sensitive loads. Available for installation and service in Amarillo, Lubbock, Odessa, and throughout West Texas.
Backed by Thermo King’s engineering and supported by certified technicians at West Texas Thermo King, this component delivers lasting performance and uptime assurance for fleet operations.
For product verification or service assistance, call (806) 376-5837.
For current warranty eligibility or OEM replacement coverage, contact us for warranty information at https://www.trailerservicesofwesttexas.com/contact or reach the service department for confirmation.
Frequently Asked Questions
Q: Is this washer compatible with Thermo King Precedent units?
A: Yes. The Washer Spring Lock 5/16 550790 fits 5/16 fasteners commonly used on Precedent-series components and other Thermo King refrigeration assemblies.
Q: How does the washer improve long-term clamp reliability?
A: The split spring design maintains residual tension under vibration, helping prevent nut or bolt loosening and preserving consistent clamp force over time.
Q: Can this part be used on reefer trailers operating in the Permian Basin and West Texas conditions?
A: Yes. The part is specified for transport refrigeration service environments across Amarillo, Lubbock, Odessa, and the Permian Basin when installed per Thermo King guidelines.
Q: Where can fleets source genuine Thermo King part 550790?
A: Certified Thermo King dealerships such as West Texas Thermo King supply OEM parts and provide installation and service support.
Related Resources
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.