90-005 material question

A quick learner says:

I think this part matches the parts on my moms aluminum windows on a Jose built in 1991. From what I read it sounds like many other people have had the same problem wth a derive alloy and the lock crumbles. I need to replace all the locks if the house and that will be about 29 of the part 90-005 and then one larger one that is on a slide window.

I just want to make sure the ones you are selling are from a better material and also if it doesn't work out can I send them back for a refund or hopefully you have at least one that will work. The tongue looks right because the space in the window is narrow and also the screws measure 2 1/4 apart. The width of the window to put it on is 1".

So mostly I want to know about the alloy on the ones you sell and if we can return them if they don't work out, in that acse I will go ahead and order them all today express mail because we need to do this soon. I already ordered one ups ground but it may take a while to get here also since the weather is bad up there.

Attached is a photo of one lock. I love your site because I just took that photo on my iPad. So easy!

Thanks so much!
User submitted a photo of a window lock.
Profile picture of Donna
Donna from SWISCO responded:
Thank you for posting. Our 90-005 is made with ZAMK NO.3. This No. 3 alloy is usually the first choice when considering zinc for die casting. Its excellent balance of desirable physical and mechanical properties, superb castability and long-term dimensional stability are the reasons why over 70% of all North American zinc die castings are in No. 3 alloy. It is, therefore, the most widely available alloy from die casting sources. ZAMK No. 3 also offers excellent finishing characteristics for plating, painting and chromate treatments. It is the "standard" by which other zinc alloys are rated in terms of die casting.

If you need to return your locks, you can take a look at our Return/Exchange Policy for more information.
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