bolt size on dana 300

[surveyboy]

dumb question. the 10 bolts on the bottom of a dana 300 case that hold the cover on, what size are they? the take a 1/2" socket I know, but I need to get a few more and forgot to grab one to bring with me? they're about 1/2 long.

guessing its a 7/16 coarse thread bolt?


anyone know?

also, were can I find a new drain plug for it with the magnitic end?

[SanDiegoCJ]

Shaun, WTF did you do to your T-case ?

[MossMan]

I think they're 3/8's.

[surveyboy]

LOL, nothing major, I put on a clocking ring and clocked it flat. but I noticed that about 5 of the bolts holding that cover on, had been ground down to the point of barely able to get a socket on them and I wanted to replace them.

and the drain plug is almost stripped inside (allen key) and just enough meat to get it off.


3/8's? could be, does a 3/8's have a 1/2 hex head?

[SanDiegoCJ]

LOL, nothing major, I put on a clocking ring and clocked it flat. but I noticed that about 5 of the bolts holding that cover on, had been ground down to the point of barely able to get a socket on them and I wanted to replace them.

and the drain plug is almost stripped inside (allen key) and just enough meat to get it off.


3/8's? could be, does a 3/8's have a 1/2 hex head?


Ohhhhhh, you did clock it. :D You were talking about it at the Jambo.
What are your plans for the new cross member/skidplate ?
The bolts for the plate are either 5/16 or 3/8, I don't remember for sure.
Just buy a few of each size, they're cheap. :flipoff2:

[surveyboy]

Yup, used go2guys ring, had it whole thing done in about 3 hours including modifing the twinsticks.

for the xmember, still trying to figure out the mount, its the lowest part. prolly end up going with a block of hard rubber and bolting that to the new xmember. been thinking of the 1/4" flat belly skid plat on the bottom, but, those fawkers are heavy. so I may endup going another route.

[73CJ85XJ]

According to the machinery's handbook, 1/2 across the flats is a 5/16 bolt

[surveyboy]

thanks :D

[trkklr77]

and fill drain plugs are usually 1/2" npt

[surveyboy]

cool thanks.

[300sniper]

According to the machinery's handbook, 1/2 across the flats is a 5/16 bolt


that is what they are. i just replaced all mine.

[surveyboy]

yup, 5/16 is right, but the drain plug is bigger that the 1/2.

[300sniper]

yup, 5/16 is right, but the drain plug is bigger that the 1/2.

i want to say that the filler plug is 1/2npt but it seems to me that the drain was only 3/8npt at least on my d300.

[trkklr77]

yeah, a 1/2 npt is actualy .825 across not like a 1/2" bolt

[surveyboy]

doh :D

well the local place doesn't have one. where should I bee looking?

[trkklr77]

any where that sells plumbing, pipe or hydralics.


i was able to find some 1/2" sight glass plug for the fillers. no guessing on the level just wipe it off, see oil good, no oil add.

[300sniper]

doh :D

well the local place doesn't have one. where should I bee looking?

might want to try your local auto parts store, posably in the red package "help" section. that is is you want the magnet. i know i would. every time i have it out there is a small amount of metal stuck to the magnet.

[bpdp379]

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7972623466&category=38657

That should work, but if not I emailed this guy http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=4546627860&category=34202 and he sent me out a 1/2"npt one for my D300.