Problem with 81-257 Screws

A home owner from Boynton Beach Florida says:
March 16, 2020
Hi

I did order 2 81-257 rollers and installed them. The rollers are the same as my old one with the exception ..the distance between the 2 holes are greather on the new one and the screws are longer and the door frame block me to adjust th roller height. I will have to remove them and replace the screws .So could you please give me the size thread of both holes. The adjusting screws and lock screw for the frame.

Thank you
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Tom from SWISCO responded:
March 19, 2020

Hello! I currently don't have access to this information, but I'll look into it for you ASAP. Please bear with us a little longer.
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Dave Sr. from SWISCO responded:
March 24, 2020

Hey there, I think I can help. I checked the screws on the 81-257 roller. The adjustment screw at the bottom of the housing is a pan head machine screw, #1/4-28 x 3/4" long. The upper frame mounting screw would be a #12 pan head sheet metal type screw. However, I'm wondering if you ordered the wrong patio door wheel for your door. That may be why you're having problems. Would it be possible to see a photo of your original roller for us to take a look at an identify? Seeing it side by side with the 81-257 would also help.
A home owner from Boynton Beach Florida says:
March 25, 2020
Thank you Dave

The roller are identical, the only difference is the distance between the 2 holes and the length of the adjusting screw. Is there are change over the years??? my door is date 1972. But with the infos received from you i will able to fix my problem. Thanks
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Dave Sr. from SWISCO responded:
March 31, 2020

Another idea would be to drill out the adjustment hole in the side edge of the door a little larger to have better access to the adjustment screw. That is what I've done in the past when I ran into the same situation. 

If all else fails, you could show us a photo of your old rollers out of the door and we can try to find a better match.
Miller Sliding Glass Door Roller, 1-1/4" dia.
Miller Sliding Glass Door Roller, 1-1/4" dia.
81-257
$7.05
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