00591-04416-81

Frequently Asked Questions

Q: What is the Toyota 00591-04416-81 roll pin used for?
A: The Toyota 00591-04416-81 is an OEM spring-type tension pin designed for positive retention of shafts and linkages in manual pallet jack assemblies. It secures pivot points and fastener connections in load-bearing mechanisms where interference fit is critical.

Q: What material and hardness specification does this roll pin meet?
A: The 00591-04416-81 is manufactured from high-carbon spring steel (SAE 1065 or equivalent) with Rockwell C44-50 hardness. This specification ensures high shear strength and resilience under repetitive load cycling typical in pallet jack operations.

Q: Which Toyota pallet jack models use this roll pin?
A: The 00591-04416-81 is compatible with Toyota manual pallet jack models featuring standard linkage and pivot assemblies. Verify your equipment serial range and assembly drawing before installation to confirm compatibility.

Q: How do you install a spring-type tension roll pin?
A: Drive the pin into the pre-drilled hole using a pin punch and hammer or press. The coiled spring design provides radial tension that grips the shaft or link with positive retention. Do not reuse the pin if it has been removed, as spring tension is permanently compromised.

Q: What is the service life expectancy of this roll pin?
A: Under normal operating conditions, the 00591-04416-81 typically provides 3-5 years of service before wear or fatigue may necessitate replacement. Inspect periodically for signs of looseness, scoring, or corrosion at the retention point.