Re: 69 Cyclone seat track bolts
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August 9, 2010 at 8:47 pm #2520
Virgil & Sue Klein
I’m not sure about the hardness factor on seat attachment bolts. I certainly would not use the softest metal as there can be a lot of stress on those bolts and the last thing you want coming loose in an accident would be the seat. I don’t think I would use anything less than a grade 5. I would guess you can by threaded stock by hardness at a decent auto parts store or hardware store. I also like to use “a big ol’ honkin’ washer” (that would be a technical term) under the floor board to spread the forces out a little.