1936coupe Senior Member Jun 4, 2010 #3 Ross in East Texas said: They should be 1/2" X 20 for all flathead years. Click to expand... thanks would that be UNF?
Ross in East Texas said: They should be 1/2" X 20 for all flathead years. Click to expand... thanks would that be UNF?
Ross in East Texas Senior Member Jun 4, 2010 #5 Yes, NF, UNF or SAE. All terms for common fine threads.