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FB seat belt bolt size or seat belt tongue size

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Old 11-25-16, 07:51 PM
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FB seat belt bolt size or seat belt tongue size

Looking for some option for making the seat belt longer so it will fit right. Do not want to go to racing harness set-up. Any suggestions.
Old 11-27-16, 09:54 AM
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seat belt bolts are an SAE standard size, so every car in the world uses the same thread
Old 11-27-16, 10:28 AM
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International seat belt bolt standard is 7/16 NF (7/16-20).

I don't know how this will help, though.
Old 11-29-16, 10:48 AM
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That answers why a metric wrench wasn't quite right. I kinda figured they might have standardized it.
Old 11-29-16, 08:46 PM
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Thanks
Old 12-03-16, 04:25 PM
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Originally Posted by Jeff20B
That answers why a metric wrench wasn't quite right. I kinda figured they might have standardized it.
since the SAE standard is only the thread, the later Mazda's have a metric head on the bolt.

Mazda usually only sells the bolt with the seatbelt or buckle, so not a lot of part numbers, although they do vary in length
Old 12-04-16, 01:13 PM
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They really don't want you using any random bolt for the seatbelt!

7/16-NF is a weird size even in SAE even though it is a "standard" size. Sort of like how a lot of engines' head bolts are 9mm or 11mm thread.
Old 12-04-16, 01:49 PM
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When you relocate a battery to one of the storage bins, it helps to use a seatbelt bolt to ground the battery to a rear seatbelt "bung". Clean the paint off the metal and it works great. Thoughts?




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