Broken window lock lever

A home owner from Plainview, NY says:

Hello, upon taking the lever mechanism apart I can see why it doesn't work. The lever turns a small nut shaped hexagon which in turn moves a tiny lever within the housing. The hexagon has worn down so it no longer grips the inside of the tiny lever. It rotates without moving the tiny lever that it is supposed to move. I'm not able to take the mechanism apart any further than what is shown in my photographs. 

My windows were made by Alside. They were installed in 1995.

Can I get the needed replacement parts? Thank you.

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Tom from SWISCO responded:

Thanks for contacting us! We can't supply the bits and pieces inside the lock, but we can supply the lock itself. It's just a matter of the size of the part. 

Start by looking at our 38-095, 38-096, 38-138, or 38-139. The key dimension here is the projection of the fork from the lip of the housing. Look over our measurements and photos and let me know what you think.

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