Need to order replacement part

A contractor from Los Angeles says:
Hi I need to order replacement parts for this window. The lock was broken and needs to be replaced. Please help.
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Emily from SWISCO responded:

Hi there!

Unfortunately, this IWC Sash Lock is no longer available. The original manufacturer recommends using the 90-313 as a substitute. However, it will be necessary to remount the holes at the top. You will need to use a screw like our 33-011. You don't want to use too long of a screw, and be careful not to drill too deep, as you could damage the frame or the glass in the sash. 

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