Thermo King Corrosion-Resistant Hex-Head Screw M8 x 1.25 S 556764
Official OEM Thermo King parts catalog entry for the Screw-HH M8 x 1.25 S, 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 Screw-HH M8 x 1.25 S (Part 556764) provides OEM-grade fastening for temperature-controlled equipment, supporting secure assemblies across Thermo King refrigeration systems. This hex-head screw ensures thread precision and reliable clamping where M8 x 1.25 fasteners are specified.
West Texas Thermo King supplies this fastener to fleets that depend on uptime and precision in transport refrigeration. Certified technicians recommend OEM fasteners to maintain system integrity across Smart Reefer SR-4, Precedent-series, and Diesel Direct Electric platforms.
- Hex-Head Design – Enables positive torque application for consistent, repeatable tightening during installation and service.
- M8 x 1.25 Thread – Matches Thermo King OEM thread standards for secure engagement and reduced risk of loosening under vibration.
- OEM Specification – Designed to meet Thermo King fastening requirements to preserve component fitment and warranty compliance.
- Corrosion-Resistant Finish – Provides long-term reliability in refrigerated trailers and trucks operating in variable West Texas climate conditions.
- Fleet-Ready Supply – Small part with high operational impact; stocked for rapid replacement to minimize downtime across Amarillo, Lubbock, Odessa, and the Permian Basin.
Product Details
| Part Number | 556764 |
| Product Name | Screw-HH M8 x 1.25 S |
| Thread Size | M8 x 1.25 |
| Head Type | Hex head (HH) |
| OEM Fit | Thermo King specified fastener |
| Compatibility | Transport refrigeration and reefer trailer applications where M8 x 1.25 hex-head screws are specified, including Precedent and SR-series assemblies |
This information reflects Thermo King fastener specifications and West Texas Thermo King stocking practices. For torque values, thread locking, or material specification in a particular assembly, refer to the unit service manual or contact certified technicians.
Efficiency & Sustainability
The Screw-HH M8 x 1.25 S supports uptime and fuel-efficient cooling by maintaining secure mechanical connections in temperature-control assemblies. Proper OEM fastening reduces service interventions and minimizes material waste associated with repeated repairs. This component integrates with CARB Evergreen-compliant fleet strategies and Smart Reefer SR-4 telematics systems to support efficient transport refrigeration operations.
Installation & Maintenance Tips
Install using calibrated torque tools to Thermo King torque specifications and inspect threads for wear or contamination before fitting. Use OEM-recommended washers or thread treatment where specified. Include this fastener in routine maintenance checks and replace if thread damage or corrosion compromises clamp force.
Real-World Applications
The Screw-HH M8 x 1.25 S fastens housings, brackets, and assemblies on reefer trailers, refrigerated trucks, and stationary refrigeration modules. Fleets operating Precedent S-610M, S-610DE, and Smart Reefer-equipped units use this fastener during scheduled service and component installs. 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, please contact us for warranty information.
Frequently Asked Questions
Q: Is this fastener compatible with Thermo King Precedent units?
A: Yes. The Screw-HH M8 x 1.25 S matches Thermo King M8 x 1.25 fastening specifications commonly used in Precedent-series assemblies.
Q: What torque range should be used for installation?
A: Use the torque value specified in the applicable Thermo King service manual or contact certified technicians at West Texas Thermo King for unit-specific guidance.
Q: Can this screw be used in field repairs for reefer trailers?
A: Yes. Using OEM-specified fasteners preserves assembly integrity and reduces the risk of repeat service; replace damaged or corroded fasteners with Part 556764 as needed.
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 Screw-HH M8 x 1.25 S, 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 Screw-HH M8 x 1.25 S (Part 556764) provides OEM-grade fastening for temperature-controlled equipment, supporting secure assemblies across Thermo King refrigeration systems. This hex-head screw ensures thread precision and reliable clamping where M8 x 1.25 fasteners are specified.
West Texas Thermo King supplies this fastener to fleets that depend on uptime and precision in transport refrigeration. Certified technicians recommend OEM fasteners to maintain system integrity across Smart Reefer SR-4, Precedent-series, and Diesel Direct Electric platforms.
- Hex-Head Design – Enables positive torque application for consistent, repeatable tightening during installation and service.
- M8 x 1.25 Thread – Matches Thermo King OEM thread standards for secure engagement and reduced risk of loosening under vibration.
- OEM Specification – Designed to meet Thermo King fastening requirements to preserve component fitment and warranty compliance.
- Corrosion-Resistant Finish – Provides long-term reliability in refrigerated trailers and trucks operating in variable West Texas climate conditions.
- Fleet-Ready Supply – Small part with high operational impact; stocked for rapid replacement to minimize downtime across Amarillo, Lubbock, Odessa, and the Permian Basin.
Product Details
| Part Number | 556764 |
| Product Name | Screw-HH M8 x 1.25 S |
| Thread Size | M8 x 1.25 |
| Head Type | Hex head (HH) |
| OEM Fit | Thermo King specified fastener |
| Compatibility | Transport refrigeration and reefer trailer applications where M8 x 1.25 hex-head screws are specified, including Precedent and SR-series assemblies |
This information reflects Thermo King fastener specifications and West Texas Thermo King stocking practices. For torque values, thread locking, or material specification in a particular assembly, refer to the unit service manual or contact certified technicians.
Efficiency & Sustainability
The Screw-HH M8 x 1.25 S supports uptime and fuel-efficient cooling by maintaining secure mechanical connections in temperature-control assemblies. Proper OEM fastening reduces service interventions and minimizes material waste associated with repeated repairs. This component integrates with CARB Evergreen-compliant fleet strategies and Smart Reefer SR-4 telematics systems to support efficient transport refrigeration operations.
Installation & Maintenance Tips
Install using calibrated torque tools to Thermo King torque specifications and inspect threads for wear or contamination before fitting. Use OEM-recommended washers or thread treatment where specified. Include this fastener in routine maintenance checks and replace if thread damage or corrosion compromises clamp force.
Real-World Applications
The Screw-HH M8 x 1.25 S fastens housings, brackets, and assemblies on reefer trailers, refrigerated trucks, and stationary refrigeration modules. Fleets operating Precedent S-610M, S-610DE, and Smart Reefer-equipped units use this fastener during scheduled service and component installs. 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, please contact us for warranty information.
Frequently Asked Questions
Q: Is this fastener compatible with Thermo King Precedent units?
A: Yes. The Screw-HH M8 x 1.25 S matches Thermo King M8 x 1.25 fastening specifications commonly used in Precedent-series assemblies.
Q: What torque range should be used for installation?
A: Use the torque value specified in the applicable Thermo King service manual or contact certified technicians at West Texas Thermo King for unit-specific guidance.
Q: Can this screw be used in field repairs for reefer trailers?
A: Yes. Using OEM-specified fasteners preserves assembly integrity and reduces the risk of repeat service; replace damaged or corroded fasteners with Part 556764 as needed.
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.