Product Description
Ultra UL 1130 Tab Lock Washer—carbon steel slotted lock washer for manual pallet jack assemblies, equivalent to Atlas Z-1130 and Motofork Z-1130; used to secure fasteners and prevent loosening due to vibration in Ultra manual pallet jacks.
Compatibility: Fits pallet jacks made by Ultra, model UL 1130. SKU: UL 1130
Specifications
Material & Construction
| Material Specification | Carbon steel |
| Steel Grade | Equivalent to SAE 1010 steel |
| Hardness | Rockwell B70 minimum |
Part Numbers
| Manufacturer Part Number | UL 1130 |
| Cross-Reference Part Numbers | Equivalent to Atlas Z-1130, Motofork Z-1130 |
| Replaces/Supersedes | Z-1130 |
| OEM Part Number | UL 1130 |
Frequently Asked Questions
Q: What is the material composition and grade of the UL 1130 Tab Lock Washer?
A: The UL 1130 is a carbon steel slotted lock washer with a material specification equivalent to SAE 1010 steel and a minimum Rockwell B70 hardness rating. This carbon steel composition provides adequate corrosion resistance for indoor material handling equipment.
Q: Which Ultra pallet jack models use the UL 1130 Tab Lock Washer?
A: The UL 1130 is compatible with Ultra manual pallet jacks designated as model UL 1130. It is used to secure fasteners in wheel assemblies and pivot connections to prevent loosening caused by vibration and equipment movement.
Q: What cross-reference part numbers are equivalent to the UL 1130?
A: The UL 1130 is equivalent to Atlas Z-1130 and Motofork Z-1130. These part numbers are direct replacements and interchangeable with the UL 1130 in manual pallet jack assemblies that originally used Z-1130 designations.
Q: Why use a tab lock washer instead of a standard flat washer?
A: Tab lock washers like the UL 1130 feature a locking tab that deforms when fasteners are tightened, preventing nuts and bolts from loosening due to vibration and equipment movement. This is critical in pallet jacks where wheel assembly fasteners experience constant micro-movements.