78635-20150-71

Frequently Asked Questions

Q: What is OEM part number 78635-20150-71 and where is it used?
A: SKU 78635-20150-71 is a helical spring lockwasher engineered for manual pallet jack assemblies. This part secures fasteners in handle linkage, pump, or wheel mounting locations on compatible manual pallet jacks to prevent vibration loosening.

Q: What material is this lockwasher made from?
A: This lockwasher is constructed of heat-treated carbon steel with a minimum Rockwell C35 hardness rating. The material provides secure fastener retention and excellent fatigue resistance. It is oil-coated for corrosion resistance.

Q: What is the design function of this helical spring lockwasher?
A: The helical spring design creates continuous spring tension that resists bolt loosening caused by vibration and equipment movement. This design maintains clamp load and prevents fasteners from backing out during normal pallet jack operation.

Q: Which manual pallet jack models use part 78635-20150-71?
A: This OEM lockwasher fits manual pallet jacks from major manufacturers compatible with OEM part number 78635-20150-71. No cross-reference part numbers are available. Verify your equipment OEM part number before ordering.

Q: What is the expected lifespan of this lockwasher?
A: With proper installation and normal pallet jack use, this lockwasher provides long-term fastener security. Replace if the lockwasher becomes permanently deformed, rusted through, or if fasteners continue to loosen despite proper assembly.