Replacing crank handles with T cranks

Question

I would like to replace the remainder of my crank handles with T cranks so I can put my three new shades down. The number on the original cranks are 40085. The t-cranks shown, are the same spine size as 40085 and I have them on five other windows. I just don't know the manufacturer and spline size. I measured the spines and theyseem to be 5/16". Can you suggest the proper spline size to order? I need to purchase three of them.

Thanks!

Tom · Accepted Answer

We unfortunately don't have a T handle with a 5/16" hole size. Can you double check that for me? It's important to be as precise as possible; there are a bunch of different sizes but they're all very close together, so it's easy to get them mixed up. For example, there is a chance the hole diameter is 11/32", which is a common size for Truth brand parts especially.

If it is 11/32" then you could use our 39-102.