Dumb Question TH350 pan bolt threads

What is the thread on a TH350 pan bolt? I am at work, the car is at home and I need to get some at lunch today! YES I searched! I think they are 3/8!

Thanks

 

should be 5/16 x 18 x 1 inch and have a 1/2 inch socket head

 

My parts catalog at work shows that it is a 3/4" length.

 

Thread size is correct. use 3/4in long though. 1 inch might come through too far and hit the front pump.

 

Just bought some on Sunday 5/16-18x3/4 is what I used.

 

the 1 inch gives ya room for flat washer and lock washer