CATHydraulic Parts

1A8063 Cap Screw — Cat 320C 320D

This is a Caterpillar Cap Screw, a high-strength fastener used in critical mechanical assemblies within Caterpillar equipment. Manufactured to precise OEM standards, it ensures secure and reliable connections, unlike a worn or damaged bolt that may have compromised thread integrity. Failure symptoms are rare but can include loose components, unusual noises from the assembly, or the inability to properly torque the fastener.

Cap Screw – Part No 1A8063 – 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
MaterialHigh-Strength Steel Alloy
ApplicationGeneral Fastening
Service LifeReplace if damaged or removed
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

The most common indication of a problem with a cap screw is the inability to achieve the specified torque during installation, suggesting damaged threads or an incorrect part. If a fastener fails in service, it can lead to component looseness and potential damage to surrounding parts. The worst-case scenario involves critical component separation, risking equipment damage and operational downtime.

Installation Tip

Always clean the threads of both the screw and the tapped hole before installation to ensure proper engagement and achieve correct torque. Avoid using impact wrenches for final tightening, as this can damage the threads or over-stress the fastener.

Service Note

When replacing cap screws, inspect the mating surfaces of the components being joined for flatness and damage, and ensure the tapped holes are clean and undamaged.