Replacement windshield screws - Page 2 - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #11 of 15 (permalink) Old 06-22-2020, 10:43 AM
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My spin is the nylon screws are to prevent cracking plastic. No harm in metal screws if you put a rubber washer under them. You can get plastic screws from McMaster Carr by the 100.
In some accidents with or without plastic screws, I've seen the entire wellnut pull out. Not worried about the accident thing.

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post #12 of 15 (permalink) Old 06-23-2020, 02:17 AM Thread Starter
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Didn't mean to start the whole nylon/metal screw conversation again. I did pick up rubber washers with the screws as well and have them installed.

I concur about the screws being nylon to prevent over tightening. I've run into it a few times, such as the valve cover bolts on my old Vulcan that were designed to snap the heads off if you over tighten (which I did...ft lbs...inch lbs...whatever).

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post #13 of 15 (permalink) Old 06-25-2020, 07:19 PM
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Quote:
Originally Posted by jjscsix View Post
Just as an added piece of information, I have always heard that Yamaha uses nylon so that if you are in an accident and are thrown over the windshield, it will break away easier to reduce the possibility of injury from the windshield. Iíve never tried it out to see if it works
Nylon screws break easily so the windshield doesn't get broken easily in a tipover or other mishap. If you carry spare screws you can just bolt it back on and keep going.

Spare screws: Lowes and Home Depot have a wide variety of screws and might have the M5 you need in nylon, but if not there's a universal workaround- inch size 10-32 nylon screws are virtually identical to their metric cousins and work fine in this application. They are universally available. They will have a straight blade or Phillips head that fits your screwdriver too.
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post #14 of 15 (permalink) Old 06-26-2020, 08:10 AM
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Quote:
Originally Posted by RaYzerman View Post
My spin is the nylon screws are to prevent cracking plastic. No harm in metal screws if you put a rubber washer under them. You can get plastic screws from McMaster Carr by the 100.
In some accidents with or without plastic screws, I've seen the entire wellnut pull out. Not worried about the accident thing.
Iíve had quite a few bikes with windshields. The FJR is the only one that screws together the way it does. Most have metal shoulder screws to keep them from cracking the windshield.

Lots of good information on this thread.

Jim
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post #15 of 15 (permalink) Old 06-26-2020, 08:59 AM
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I ordered a bag of 100 from McMaster-Carr for about $12. Item # and description below.
92492A738 Nylon Pan Head Phillips Screws, M5 x 0.80 mm Thread, 16mm Long, Black, Packs of 100
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