939-357

Frequently Asked Questions

Q: What is SKU 939-357 and where is it used?
A: SKU 939-357 is a slotted spring roll pin designed for manual pallet jack wheel assemblies and pivot connections. This pin provides positive retention under shear load in demanding material handling applications where vibration and repeated cycling are common.

Q: What material is the 939-357 roll pin made from?
A: The 939-357 is constructed from heat-treated carbon spring steel to achieve hardness between Rockwell C48 and C58. This hardness range provides excellent shear strength and fatigue resistance required for load-bearing applications in wheel hubs and pivot pins.

Q: What equipment brands use 939-357 roll pins?
A: The 939-357 is compatible with manual pallet jacks from Crown, Toyota, Raymond, Yale, Hyster, and other OEM manufacturers. The pin is sized for standard metric or imperial wheel axle holes across common manual pallet jack designs.

Q: How do I verify the correct size and length of 939-357?
A: Measure the existing pin diameter and length from your equipment, or consult your pallet jack assembly drawing. The 939-357 is a slotted spring design that self-locks when inserted; measure the axle hole diameter to confirm compatibility with this standard size.

Q: How long does a 939-357 roll pin typically last in service?
A: Service life is typically 2000 to 4000 operating hours depending on load conditions and maintenance. Pins may need replacement if you observe loose wheels, excessive play in the axle, or if the slotted pin has deformed or fractured during inspection.

Q: Can 939-357 be used as a direct replacement for other manufacturers roll pins?
A: The 939-357 meets general pallet jack roll pin standards for diameter and hardness. However, verify axle hole size, pin length, and slot configuration match your specific equipment before ordering, as slight variations exist across different pallet jack models.