Thermo King Spring Lock Washer 1/2 Stainless Steel 552159
Official OEM Thermo King parts catalog entry for the Thermo King Lockwasher Spring 1/2 SS 552159, 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 Lockwasher Spring 1/2 SS 552159 delivers OEM-grade fastening security for temperature-critical fleets. Designed to support reliable clamping force under vibration, this component contributes to consistent operation across Thermo King refrigeration system installations and transport refrigeration fleets.
Key Features & Customer Benefits
- Stainless Steel Construction – Provides corrosion resistance for long life in outdoor and refrigerated environments common to reefer trailers and refrigerated trucks.
- 1/2-Inch Fastener Compatibility – Fits 1/2-inch bolts and studs used across many Thermo King assemblies to maintain secure connections under cyclic loading.
- Spring Lock Design – Prevents loosening from vibration, supporting uptime and reducing unplanned service events for fleet operations.
- OEM Form, Fit, Function – Engineered to meet Thermo King standards so technicians achieve precise, reliable fastening during installation and repairs.
- Low-Maintenance – Requires minimal service when inspected during routine maintenance intervals, helping reduce downtime and labor costs.
Product Details
| Part Number | 552159 |
| Product Name | Thermo King Lockwasher Spring 1/2 Stainless Steel |
| Material | Stainless Steel (SS) |
| Fastener Size | 1/2 inch |
| Typical Use | Secure fastening in Thermo King refrigeration and transport refrigeration assemblies |
Efficiency & Sustainability
This spring lockwasher supports overall system efficiency by maintaining secure mechanical connections that prevent air or refrigerant leaks caused by loose hardware. Reliable fastening helps preserve temperature control and fuel-efficient cooling performance in Smart Reefer SR-4, Precedent, and Diesel Direct Electric configurations, contributing to lower operational waste and consistent cargo protection.
Installation & Maintenance Tips
Install on properly sized 1/2-inch bolts and tighten to OEM torque specifications. Inspect lockwashers during scheduled service intervals and replace any fasteners showing corrosion or deformation. Use OEM-grade fasteners and follow Thermo King service procedures to ensure secure fitment and long-term reliability.
Real-World Applications
The Thermo King Lockwasher Spring 1/2 SS 552159 secures critical assemblies on reefer trailers, refrigerated straight trucks, and transport refrigeration units where vibration and temperature cycling are constant. It supports dependable temperature control for perishable loads, ensuring cargo integrity across regional routes in the Permian Basin and long-haul operations.
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 call the service department for confirmation.
Frequently Asked Questions
Q: Is this lockwasher compatible with Thermo King Precedent units?
A: Yes. The lockwasher fits 1/2-inch fastener locations commonly used on Precedent-series and many Thermo King refrigeration unit assemblies when the specification calls for a 1/2-inch spring lockwasher.
Q: How does this part improve fleet reliability?
A: The spring lock design resists loosening from vibration, maintaining clamping force that preserves system integrity, reduces service visits, and supports continuous temperature control for cargo protection.
Q: What maintenance is recommended?
A: Inspect during routine service intervals, replace if corroded or distorted, and install to OEM torque values using compatible 1/2-inch fasteners.
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 Lockwasher Spring 1/2 SS 552159, 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 Lockwasher Spring 1/2 SS 552159 delivers OEM-grade fastening security for temperature-critical fleets. Designed to support reliable clamping force under vibration, this component contributes to consistent operation across Thermo King refrigeration system installations and transport refrigeration fleets.
Key Features & Customer Benefits
- Stainless Steel Construction – Provides corrosion resistance for long life in outdoor and refrigerated environments common to reefer trailers and refrigerated trucks.
- 1/2-Inch Fastener Compatibility – Fits 1/2-inch bolts and studs used across many Thermo King assemblies to maintain secure connections under cyclic loading.
- Spring Lock Design – Prevents loosening from vibration, supporting uptime and reducing unplanned service events for fleet operations.
- OEM Form, Fit, Function – Engineered to meet Thermo King standards so technicians achieve precise, reliable fastening during installation and repairs.
- Low-Maintenance – Requires minimal service when inspected during routine maintenance intervals, helping reduce downtime and labor costs.
Product Details
| Part Number | 552159 |
| Product Name | Thermo King Lockwasher Spring 1/2 Stainless Steel |
| Material | Stainless Steel (SS) |
| Fastener Size | 1/2 inch |
| Typical Use | Secure fastening in Thermo King refrigeration and transport refrigeration assemblies |
Efficiency & Sustainability
This spring lockwasher supports overall system efficiency by maintaining secure mechanical connections that prevent air or refrigerant leaks caused by loose hardware. Reliable fastening helps preserve temperature control and fuel-efficient cooling performance in Smart Reefer SR-4, Precedent, and Diesel Direct Electric configurations, contributing to lower operational waste and consistent cargo protection.
Installation & Maintenance Tips
Install on properly sized 1/2-inch bolts and tighten to OEM torque specifications. Inspect lockwashers during scheduled service intervals and replace any fasteners showing corrosion or deformation. Use OEM-grade fasteners and follow Thermo King service procedures to ensure secure fitment and long-term reliability.
Real-World Applications
The Thermo King Lockwasher Spring 1/2 SS 552159 secures critical assemblies on reefer trailers, refrigerated straight trucks, and transport refrigeration units where vibration and temperature cycling are constant. It supports dependable temperature control for perishable loads, ensuring cargo integrity across regional routes in the Permian Basin and long-haul operations.
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 call the service department for confirmation.
Frequently Asked Questions
Q: Is this lockwasher compatible with Thermo King Precedent units?
A: Yes. The lockwasher fits 1/2-inch fastener locations commonly used on Precedent-series and many Thermo King refrigeration unit assemblies when the specification calls for a 1/2-inch spring lockwasher.
Q: How does this part improve fleet reliability?
A: The spring lock design resists loosening from vibration, maintaining clamping force that preserves system integrity, reduces service visits, and supports continuous temperature control for cargo protection.
Q: What maintenance is recommended?
A: Inspect during routine service intervals, replace if corroded or distorted, and install to OEM torque values using compatible 1/2-inch fasteners.
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.