A bit of advice...if your radiator core support cushion set comes with square washers that look like these, don't use them. The square hole is a little bit too large and the carriage bolt shoulder spun inside of it. The hole in the original washer fit the shoulder of the new bolts perfectly. Also, the originals have the square hole "off-set" for a reason...which is to keep the entire washer from spinning around. I had both problems while I was assembling the first side ending up doing it 3 times. Use the original square washers to avoid this issue.
Woody