OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Briggs & Stratton Engines Stripped Quantum head bolts

Hi All,

As mentioned above the bolts are 5/16 UNC 18 threads per inch with a 1/2 inch AF head.

The top 3 bolts are longer , length 2 and a 1/4 inches .

If the alloy threads are not too damaged you can re-cut them with a cheap eBay tap and
if the bolts aren't too damaged a cheap die nut will repair them but that will be just under $23.

Cheers
Max.