Thermo King Hex-Head Screw M6x30 DIN 931 SS 557372

$3.11

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Built for Performance: The Thermo King Screw-HH M6x30 DIN 931 SS provides OEM-grade fastening reliability for Thermo King refrigeration systems, securing assemblies where precision and corrosion resistance matter. This stainless steel hex head bolt supports consistent temperature control and uptime for transport refrigeration fleets.

Thermo King refrigeration system engineers specify durable fasteners to protect critical reefer components. This M6 x 30 mm, DIN 931 partial-thread hex bolt delivers dependable clamping force across refrigerated trucks, reefer trailers, and trailer-mounted units operating in West Texas conditions.

OEM-compliant DIN 931 design – Ensures standard partial-thread shank geometry for consistent installation and load distribution.
Stainless steel construction – Provides corrosion resistance for extended service life in salt, moisture, and refrigerated environments.
Precision M6 x 30 sizing – Matches Thermo King fastener requirements to maintain secure assemblies and prevent loosening under vibration.
Hex head (HH) – Allows wrench or socket installation for repeatable torque control during maintenance and service intervals.
Fleet uptime focused – Reduces replacement frequency and supports predictable maintenance windows for improved ROI.
Versatile use – Fits a broad range of transport refrigeration applications including reefer trailer and truck mounting points.

Product Details

Part Number	557372
Product	Screw-HH M6x30 DIN 931 SS
Material	Stainless steel (SS)
Standard	DIN 931 (partial thread, hex head)
Size	M6 × 30 mm
Typical Thread Pitch	1.0 mm (metric coarse)
Application	Thermo King refrigeration unit assemblies and related transport refrigeration fittings

Efficiency & Sustainability

This stainless-steel fastener supports operational efficiency by requiring fewer replacements over time, reducing material waste and maintenance downtime. When used in modern Thermo King platforms — including Smart Reefer SR-4 and Diesel Direct Electric ecosystems — durable fasteners help maintain fuel-efficient cooling and consistent temperature control across long-haul operations and regional routes in the Permian Basin and West Texas.

Installation & Maintenance Tips

Install with the recommended torque for M6 fasteners and use compatible nuts or lock washers where specified. Inspect fastener torque during scheduled service intervals and replace any fasteners showing excessive corrosion or thread damage. Use OEM-grade hardware to preserve sealing, alignment, and structural integrity of refrigeration components.

Real-World Applications

This Thermo King Screw-HH M6x30 DIN 931 SS secures panels, brackets, and component mounts on reefer trailers, refrigerated trucks, and trailer-mounted refrigeration units. It performs reliably across Amarillo, Lubbock, Odessa, and throughout West Texas where transport refrigeration systems face heat, dust, and long-distance duty cycles.

Available for installation and service in Amarillo, Lubbock, Odessa, and throughout West Texas.

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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 at https://www.trailerservicesofwesttexas.com/contact or contact the service department for confirmation.

Frequently Asked Questions

Q: Is this screw compatible with Thermo King Precedent and S-series units?
A: This M6x30 DIN 931 stainless screw fits common fastening points on Thermo King refrigeration assemblies; verify fitment against unit drawings or parts lists for specific models.

Q: What maintenance interval is recommended for fastener inspection?
A: Inspect fasteners during scheduled service intervals and after heavy vibration or repair work; replace any fasteners that show thread wear or corrosion.

Q: Can this fastener be used on reefer trailers operating in coastal or high-humidity regions?
A: Yes. Stainless steel construction provides enhanced corrosion resistance suited to wet and high-humidity environments common in refrigerated fleets.

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.

OEM-compliant DIN 931 design – Ensures standard partial-thread shank geometry for consistent installation and load distribution.
Stainless steel construction – Provides corrosion resistance for extended service life in salt, moisture, and refrigerated environments.
Precision M6 x 30 sizing – Matches Thermo King fastener requirements to maintain secure assemblies and prevent loosening under vibration.
Hex head (HH) – Allows wrench or socket installation for repeatable torque control during maintenance and service intervals.
Fleet uptime focused – Reduces replacement frequency and supports predictable maintenance windows for improved ROI.
Versatile use – Fits a broad range of transport refrigeration applications including reefer trailer and truck mounting points.