Paul from SWISCO responded:
May 22, 2015
That is a little peculiar. I believe 5/16" is the smallest. Are you sure the spline isn't just worn down? Could you show us a few pictures of your operator so that we can identify what you're working with? Thanks!
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Dave Sr. from SWISCO responded:
May 27, 2015
I believe you need a crank handle for a mobile home operator. Take a look at our 39-116 for one possibility. We also have others handles with different lengths that may interest you. See our mobile home hardware section for more.
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Tom from SWISCO responded:
May 28, 2015
I don't think they make this kind of hardware with a 1/4" spline. Are you sure that's what you have? 1/4" and 5/16" are very close together. I would triple check your measurements and make sure they are as accurate as possible.
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Dave Sr. from SWISCO responded:
June 2, 2015
I took one of our mobile home operators (the 39-234) along with a mobile home handle (the 39-114) and measured them with a micrometer. The spline came out to be .276", which is in between 1/4" and 5/16". It's not uncommon for manufacturers to round up or down in either case when a measurement is this specific, though. Check your operator spline with a micrometer and see if it matches up to .276". The operators and handles used for mobile home awning windows are standard in the industry.
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Dave Sr. from SWISCO responded:
June 9, 2015
I took measurements on the widest part of the spline at the top. If your operator is the type used on mobile home awning windows, I think there is a good chance it could fit. These mobile home operators are normally a standard size.
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