I believe it is metric because I put 3/4 on it and it is way too loose
October, 6, 2011 AT 4:29 AM
I don't have an F 150 here to check for sure. If 3/4" is loose and 5/8" is too small, 17mm is between them. Try that and let me know.
October, 6, 2011 AT 4:35 AM
Maybe 7/8 was too big I know 19mm was too small for sure
October, 6, 2011 AT 4:39 AM
I can't imagine them being much bigger than that. Try a 22mm.
October, 6, 2011 AT 4:43 AM
I just wanna make sure because I have to buy it and if its wrong than I gotta go through the whole hassel of returning and rebuyin
October, 6, 2011 AT 4:53 AM
I understand. I will check to see if we have any in for service tomorrow. The manual I use doesn't give me this info. If you can tell me the standard sizes you have, for example 7/8 is too big and 3/4 is too small, I can figure it out for you. Let me know quickly because it's 1am and I need to get to bed. I'll wait for a little while longer to see if you reply.
October, 6, 2011 AT 2:57 PM
I believe 7/8 was too big and the next size smaller was too small so its between that
October, 6, 2011 AT 5:55 PM
7/8 is almost an inch. 1"= 25.4mm. I would say it should be around 22mm