Thermo King OEM Hex-Head Screw M8 x 1.25 SZN 558971
Official OEM Thermo King parts catalog entry for the Thermo King Screw-HH M8 x 1.25 SZN 558971, 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 SZN 558971 delivers OEM-grade fastening reliability for Thermo King refrigeration systems, ensuring secure connections in temperature-controlled transport applications where precision and uptime matter.
West Texas Thermo King, a certified Thermo King dealership, lists this fastener for fleets that expect consistent service life and dependable temperature control across reefer trailers and transport refrigeration units operating in the Southwest.
- Hex-head (HH) Designation – Provides a standard, accessible fastening interface for service technicians, supporting rapid maintenance and consistent torque application.
- M8 x 1.25 Thread – Ensures precise engagement with OEM-threaded components for secure assemblies in Thermo King systems.
- OEM-Compatible Specification – Matches Thermo King fastener requirements to support long-term reliability and proper fit in approved locations.
- Corrosion-Resistant Finish – Meets industry expectations for fastener longevity in harsh operating environments common to West Texas and the Permian Basin.
- Serviceability – Simplifies depot and field service with a common metric size and head style recognized across Thermo King maintenance protocols.
- Fleet Uptime Focus – Minimizes downtime risk by maintaining secure mechanical connections that support stable temperature control for perishable loads.
Product Details
| Part Number | 558971 |
| Designation | Screw-HH M8 x 1.25 SZN |
| Thread Size | M8 x 1.25 |
| Head Style | Hex-head (HH) |
| Manufacturer | Thermo King (OEM) |
| Application | Thermo King transport refrigeration assemblies and service locations requiring M8 x 1.25 fasteners |
Efficiency & Sustainability: Properly selected OEM fasteners support fuel-efficient cooling and reliable temperature control by preserving system integrity. When used in Thermo King platforms — including Precedent S-610M, S-610DE, and Smart Reefer SR-4 where the OEM specification calls for an M8 x 1.25 hex-head fastener — this component helps maintain optimized airflow, sealing, and mechanical alignment that contribute to reduced energy consumption and consistent compliance with regional emissions programs such as CARB Evergreen when applicable.
Installation & Maintenance Tips: Install this fastener per Thermo King torque and service specifications. Use OEM replacement hardware and recommended thread locking or anti-seize products where specified. Inspect fasteners during scheduled maintenance intervals and replace any fastener showing wear, corrosion, or thread damage to maintain secure assemblies and continuous temperature control.
Real-World Applications: The Thermo King Screw-HH M8 x 1.25 SZN 558971 supports reefer trailers, refrigerated trucks, and transport refrigeration units where M8 x 1.25 hex-head fasteners are specified for structural, mounting, or component retention tasks. This part fits the operational needs of regional fleets operating in Amarillo, Lubbock, Odessa, and across West Texas that prioritize uptime and delivery integrity.
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: https://www.trailerservicesofwesttexas.com/contact
Frequently Asked Questions
Q: Is this fastener compatible with Thermo King Precedent units?
A: Yes. When the OEM specification for a given attachment or component calls for an M8 x 1.25 hex-head fastener, this part meets that requirement for secure fit and long-term durability.
Q: Does the "SZN" code indicate material or finish?
A: SZN represents an internal Thermo King designation. For finish or material specifics, reference Thermo King parts documentation or contact West Texas Thermo King for verification.
Q: Can this fastener be used in field repairs across the Permian Basin?
A: Yes. This OEM Thermo King screw supports field and depot repairs that require a metric M8 x 1.25 hex-head fastener, helping fleets maintain uptime across West Texas operations.
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 Screw-HH M8 x 1.25 SZN 558971, 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 SZN 558971 delivers OEM-grade fastening reliability for Thermo King refrigeration systems, ensuring secure connections in temperature-controlled transport applications where precision and uptime matter.
West Texas Thermo King, a certified Thermo King dealership, lists this fastener for fleets that expect consistent service life and dependable temperature control across reefer trailers and transport refrigeration units operating in the Southwest.
- Hex-head (HH) Designation – Provides a standard, accessible fastening interface for service technicians, supporting rapid maintenance and consistent torque application.
- M8 x 1.25 Thread – Ensures precise engagement with OEM-threaded components for secure assemblies in Thermo King systems.
- OEM-Compatible Specification – Matches Thermo King fastener requirements to support long-term reliability and proper fit in approved locations.
- Corrosion-Resistant Finish – Meets industry expectations for fastener longevity in harsh operating environments common to West Texas and the Permian Basin.
- Serviceability – Simplifies depot and field service with a common metric size and head style recognized across Thermo King maintenance protocols.
- Fleet Uptime Focus – Minimizes downtime risk by maintaining secure mechanical connections that support stable temperature control for perishable loads.
Product Details
| Part Number | 558971 |
| Designation | Screw-HH M8 x 1.25 SZN |
| Thread Size | M8 x 1.25 |
| Head Style | Hex-head (HH) |
| Manufacturer | Thermo King (OEM) |
| Application | Thermo King transport refrigeration assemblies and service locations requiring M8 x 1.25 fasteners |
Efficiency & Sustainability: Properly selected OEM fasteners support fuel-efficient cooling and reliable temperature control by preserving system integrity. When used in Thermo King platforms — including Precedent S-610M, S-610DE, and Smart Reefer SR-4 where the OEM specification calls for an M8 x 1.25 hex-head fastener — this component helps maintain optimized airflow, sealing, and mechanical alignment that contribute to reduced energy consumption and consistent compliance with regional emissions programs such as CARB Evergreen when applicable.
Installation & Maintenance Tips: Install this fastener per Thermo King torque and service specifications. Use OEM replacement hardware and recommended thread locking or anti-seize products where specified. Inspect fasteners during scheduled maintenance intervals and replace any fastener showing wear, corrosion, or thread damage to maintain secure assemblies and continuous temperature control.
Real-World Applications: The Thermo King Screw-HH M8 x 1.25 SZN 558971 supports reefer trailers, refrigerated trucks, and transport refrigeration units where M8 x 1.25 hex-head fasteners are specified for structural, mounting, or component retention tasks. This part fits the operational needs of regional fleets operating in Amarillo, Lubbock, Odessa, and across West Texas that prioritize uptime and delivery integrity.
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: https://www.trailerservicesofwesttexas.com/contact
Frequently Asked Questions
Q: Is this fastener compatible with Thermo King Precedent units?
A: Yes. When the OEM specification for a given attachment or component calls for an M8 x 1.25 hex-head fastener, this part meets that requirement for secure fit and long-term durability.
Q: Does the "SZN" code indicate material or finish?
A: SZN represents an internal Thermo King designation. For finish or material specifics, reference Thermo King parts documentation or contact West Texas Thermo King for verification.
Q: Can this fastener be used in field repairs across the Permian Basin?
A: Yes. This OEM Thermo King screw supports field and depot repairs that require a metric M8 x 1.25 hex-head fastener, helping fleets maintain uptime across West Texas operations.
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.
