OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Briggs & Stratton Engines B&S bolt size?

So, the thread is 7/16" diameter by 20 threads per inch - in other words, you need a 7/16 UNF bolt. The end of the crankshaft is tapped 1" deep. To select a bolt length you need to know how thick the washer or whatever clamps onto the end of the crankshaft is.