Product Description
Pallet Mule PU AA-29 Shoulder Bolt, OEM-equivalent alloy steel fastener engineered for manual pallet jack models AA5000 and AA5500. Features 1/2 -20 UNF thread
Compatibility: Fits pallet jacks made by Pallet Mule, model AA5000. SKU: PU AA-29
Specifications
Material & Construction
| Material Specification | Alloy steel, case hardened |
| Steel Grade | Grade 8 |
Part Numbers
| OEM Part Number | PU AA-29 |
| Manufacturer Part Number | AA-29 |
| Cross-Reference Part Numbers | PUAA-29, PTAA-29, AA-29 |
| Compatible With Models | Pallet Mule AA5000, Pallet Mule AA5500 |
Frequently Asked Questions
Q: What manual pallet jack models does the PU AA-29 shoulder bolt fit?
A: The PU AA-29 shoulder bolt is OEM-equivalent and engineered for Pallet Mule AA5000 and AA5500 manual pallet jack models. Cross-reference part numbers include PUAA-29, PTAA-29, and AA-29. Verify your equipment model before ordering to ensure compatibility.
Q: What are the thread specifications for the PU AA-29 shoulder bolt?
A: The PU AA-29 features 1/2 inch diameter with 20 threads per inch (1/2 - 20 UNF) thread specification. This thread pattern is standard across Pallet Mule AA5000 and AA5500 models for axle and wheel assembly fastening applications.
Q: What material and grade is the PU AA-29 shoulder bolt manufactured from?
A: The PU AA-29 is manufactured from alloy steel with case hardening and meets Grade 8 specification. Grade 8 fasteners provide high tensile strength and shear resistance, making them suitable for critical load-bearing applications in manual pallet jacks. This material resists fatigue failure under repeated stress cycles.
Q: Why is case hardening important in a shoulder bolt for pallet jacks?
A: Case hardening creates a hard outer surface on the alloy steel while maintaining a tough, ductile core. This combination resists surface wear and galling at the shoulder transition while preventing brittle fracture under impact loads. For pallet jacks, this means the shoulder bolt tolerates repeated assembly and disassembly cycles without seizing or breaking.
Q: How long does a Grade 8 shoulder bolt typically last in a manual pallet jack?
A: Under normal warehouse use, a Grade 8 case-hardened shoulder bolt like the PU AA-29 typically lasts 3 to 5 years or longer. Replacement is necessary if you observe corrosion pitting, thread stripping, or visible bend or deformation. Grade 8 material resists premature wear much better than lower-grade fasteners.
Q: Is the PU AA-29 a direct OEM replacement or an aftermarket equivalent?
A: The PU AA-29 is OEM-equivalent, meaning it meets or exceeds the original equipment specifications for Grade 8 alloy steel with case hardening and 1/2 - 20 UNF threading. It is a direct replacement for the shoulder bolt on Pallet Mule AA5000 and AA5500 models and functions identically to the original part.