what thread

[flatlander]

I need to clean up a rear end and I'd like to plug the breather hole on the left axle shaft so no water gets in. It's bigger than 3/8-16 and smaller than 7/16-14. Maybe a 7/16 fine thread?

 

[Devilish]

I don't know what size it is without looking at it myself but a cork from the hardware store would do the job too. Look in the nuts n bolts area.

 

[94f450sd]

its pipe thread.

 

[Russ]

Barn, I'm thinking it's a 1/8 pipe thread.

 

[geonc]

It's 1/8 NPT {pipe thread}

IMVHO ---do not plug it!

Just run a longer hose. All you will need is a barb fitting and some carb/vacum vent hose from either the big box stores or local parts house.
The hose can be 6 foot long if you are that worried about water getting in!
But if you are running that deep, you will also need to snorkle the t/case and tranny vents, and front diff as well!

Plugging off will only trap the heat and eventually lead to seal failures!

 

[subway]

dont plug it permanantly or the seals will go from the expansion with the heating and cooling.

if you are just covering it to clean it get a 1/8 pipe plug

 

[Dsl_Dog_Treat]

Hey Barn, this is the one that gets cleaned up and painted hot pink for Mel?

 

[Devilish]

LoL!! Goes with the purple transfer case