Do these caster lock?

These 4 shelving unit wheels/casters include: two locking and two non-locking caster roller wheels.

What is the thread size of these casters? I think I own this rack. Is there any model numbers on your racks? I think the whole is a quarter inch.

The threads on this are 3/8 – 16 which are coarse threads.

Can these be used with the shelving that has self-leveling legs? 5-tier 36" by 18" by 72"

Yes, the casters can be used on that shelving unit.

We'll put the information up on the casters product page itself, thank you for letting us know. It's currently on each of the shelving unit pages in the feature bullets. 

This is the shelving unit you are describing by the measurements.

https://honeycando.com/products/5-tier-adjustable-shelving-unit-with-350-pound-shelf-capacity-chrome?_pos=3&_sid=13e7e1eb4&_ss=r

Hope that helps.

I purchased a White Honey-Can-Do 4 Shelf Unit a while ago. It’s 35x14x54. Poles Measure 1” across the Top. Will these Casters fit this Unit? Thank you for your time.

To verify if it will fit your specific model, please verify listing as follows: https://honeycando.com/products/shelving-unit-wheels

Hello, can I use these on she-01903 (3 Shelf Unit)?

Yes, this can be used on model SHF-01903.

Will this be compatible with SHO-02990 the rolling shoe rack?

Sorry, these casters are only compatible with this selection: https://honeycando.com/products/shelving-unit-wheels.

How much weight can this set of 4 casters hold?

Total weight capacity is 350 pounds.

Do any of your three-tier shelving units accept casters? Is there a caster kit for them, and what is the stock number and the thread size for them?

The list of units that this caster is compatible with is as follows https://honeycando.com/products/shelving-unit-wheels.