MO M551-1

Frequently Asked Questions

Q: What pallet jack models use the MO M551-1 screw?
A: The MO M551-1 screw is a fastening component for manual pallet jacks made by Mobile, specifically the ML45 Mini and ML45 Miney models. Confirm your equipment matches this designation.

Q: Where is the MO M551-1 screw used in a Mobile pallet jack assembly?
A: The MO M551-1 serves as a mechanical fastener in the pillar block, clevis, load wheel assembly, or other critical joints within the lift mechanism. It maintains structural integrity and prevents component separation under load.

Q: What specifications should I verify before ordering the MO M551-1?
A: Confirm the screw diameter, length, thread pitch, and head type match your original equipment. Cross-reference the part number in the Mobile ML45 Mini or Miney service manual. Dimension mismatch can cause assembly failure or inadequate clamping force.

Q: What damage indicators mean the MO M551-1 screw needs replacement?
A: Replace the screw if threads are stripped or corroded, if the head is broken or damaged, if corrosion prevents tightening, or if loosening is detected during pre-operation inspection. Stripped fasteners compromise load-bearing connections.

Q: Is the MO M551-1 interchangeable with standard metric or SAE fasteners?
A: The MO M551-1 is engineered to OEM specifications for Mobile equipment. Do not substitute with standard fasteners without verification of thread type, diameter, length, and head configuration. Incorrect fasteners can cause component misalignment and equipment failure.

Q: What material is the MO M551-1 screw made from?
A: The MO M551-1 is typically manufactured from hardened steel or stainless steel to resist corrosion and withstand shear and tensile forces during equipment operation. Material grade ensures adequate strength for repeated load cycles and environmental exposure.