According to the manufacturer, the measurement for the diameter of AVT75370 - Panel Wall Wire Hook is approximate and measures roughly 1/16". The length of this pin into the fabric is 1.25" and the weight limit is 5-6 pounds. It can hold up to 25 pages.
Each Alera® Double Sided Partition Garment Hook holds up to 44 lbs.
The ALECH1SR Garment Hook only fits panels up to 2-1/2" thick. The 3 1/4" Maximum Depth refers to the size of the hook itself. For garment hooks that will fit your 3" panels, check out:
Thank you very much for your question. This Cubical Partition Hanger by Quartet has a maximum of 2 1/4" thick for partition walls. Now we do have a lot of partition hanging accessories for panels that are 3" thick or less and here is the link for those items. Accessories for 1/2" to 3" Thick Partition Walls
Hope that this helps and it is always our pleasure to help you with your office supply needs. Appreciate your question and have a good day!