CATHydraulic Parts

0S1588 Cap Screw — Cat 320C 320D

This is a high-strength cap screw used for securing critical components within the hydraulic system or other heavy-duty assemblies. Manufactured from hardened steel, it provides superior clamping force and resistance to vibration compared to standard fasteners, preventing loosening in demanding applications. Operators may notice loose or rattling components, or hydraulic leaks if this fastener fails or becomes loose.

Cap Screw – Part No 0S1588 – CAT Spare Part
Part Specifications
BrandCAT
CategoryHydraulic Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Flush hydraulic lines before fitting new components. Use only manufacturer-specified hydraulic fluid. Check O-rings and backup rings for correct orientation. Bleed air from system after installation.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeCap Screw
MaterialHardened steel
ApplicationHydraulic system mounting
Service LifeReplace if removed or shows signs of wear
CompatibilityCaterpillar 320C, 320D, 323D, 325D, 329E
ConditionNew — CTP aftermarket replacement

Failure Symptoms

The initial symptom of a loose or failed cap screw might be a slight vibration or noise from the affected assembly. If the fastener continues to loosen, the connection will weaken, potentially leading to component misalignment or minor leaks. The worst outcome is the complete separation of the fastened component, causing significant operational disruption and potential damage.

Installation Tip

Always clean the threads of both the screw and the tapped hole before installation to ensure proper seating and torque. Avoid reusing old or damaged fasteners, as they may not hold the required clamping force.

Service Note

Inspect the component being fastened and the surrounding area for any signs of wear, damage, or fluid leakage.