So I have a 2002 Dodge Dakota with a 4.7 and I have been trying to take out my cylinder heads and I am trying to take the bolts out of the exhaust flange and I was just wondering what size socket I need. I know that a 13 mm is too small and 14 mm is slightly too big.

 

Hey GoofWarrior,
I just replaced a head on my 3.9L 2000 Dakota.
Exhaust bolts were SAE 9/16" YMMV...

 

Appreciate it. It would have taken me forever to figure it out.

 

4.7 is german so I would expect metric threads. But very possible to be SAE... or might just be so rusted that they started as 13mm and rusted to 13.5 mm or something.

 

Hi Guy's
I made up a conversion chart for Society of Automotive Engineers (SAE) to Metric
Maybe add as a sticky???

UGH !!! I had them all in separately spaced columns
took me 20 mins!
And this is how they were published!
the old saw is true... No good deed goes unpunished!


Standard (SAE) Metric (mm) Inches (decimal)
1/32″ 0.7938 mm 0.0313″
1 mm 0.0394″
1/16″ 1.5875 mm 0.0625″
5/64″ 1.98438 mm 0.0781″
2 mm 0.0787″
3/32″ 2.3813 mm 0.0938″
7/64″ 2.7781 mm 0.1094″
3 mm 0.1181″
1/8″ 3.175 mm 0.125″
5/32″ 3.9688 mm 0.156″
4 mm 0.157″
4.5 mm 0.177″
3/16″ 4.7625 mm 0.188″
5 mm 0.197″
5.5 mm 0.216″
7/32″ 5.5563 mm 0.219″
6 mm 0.236″
1/4″ 6.35 mm 0.25″
6.5 mm 0.256″
7 mm 0.276″
9/32″ 7.1438 mm 0.281″
5/16″ 7.9375 mm 0.313″
8 mm 0.315″
11/32″ 8.7313 mm 0.344″
9 mm 0.354″
3/8″ 9.525 mm 0.375″
10 mm 0.394″
13/32″ 10.3188 mm 0.406″
11 mm 0.433″
7/16″ 11.1125 mm 0.438″
15/32″ 11.9063 mm 0.469″
12 mm 0.472″
1/2″ 12.7 mm 0.5″
13 mm 0.512″
17/ 13.4938 mm 0.531″
14 mm 0.551″
9/16″ 14.2875 mm 0.563″
15 mm 0.591″
19/32″ 15.0813 mm 0.594″
5/8″ 15.875 mm 0.625″
16 mm 0.63″
21/32″ 16.6688 mm 0.656″
17 mm 0.669″
11/16″ 17.4625 mm 0.688″
18 mm 0.709″
23/32″ 18.2563 mm 0.719″
19 mm 0.748″
3/4″ 19.05 mm 0.75″
25/32″ 19.8438 mm 0.781″
20 mm 0.787″
13/16″ 20.6375 mm 0.813″
21 mm 0.827″
27/32″ 21.4313 mm 0.844″
22 mm 0.866″
7/8″ 22.225 mm 0.875″
23 mm 0.906″
29/32″ 23.0188 mm 0.906″
15/16″ 2 3.8125 mm 0.938″
24 mm 0.945″
1″ 25.4 mm 1″