Need glow plug tap for restoring threads

[mechanoman]

Howdy, haven't posted in a good while. Got a 7.3 in the shop where previous excuse for a mechanic cross-threaded one of the glow plugs. Does anyone make a tap for chasing the threads in the glow plug hole? I'm sure I'm not the first poor soul to encounter this, but so far haven't found anything on the forum. Any help? Many thanks.

 

[icanfixall]

Here ya go for the threads to the glow plugs... M10 x 1 (SAE J5480)
Want the injecter threads.. 22mm-2.0

 

[Knuckledragger]

Gary is right. The threads are metric, even though the drive hex is 3/8 inch. Go figure.

 

[6.9poweredscout]

I thought they were 10mm hex? Thats what I always use

 

[justinray]

I thought they were 10mm hex? Thats what I always use

Its actually 3/8", but a 10 mm is only slightly too large (just shy of a half mm too big) so it works fine.

 

[Dsl_Dog_Treat]

I thought they were 10mm hex? Thats what I always use

It is metric.

M10x1.0

 

[mechanoman]

Thanks, all. My thread pitch gauge says M10 x 1.0 as well, just didn't know if it might be tapered and take some special stealer-ship tool. Now we will see how it all goes. Fingers are crossed...

 

[icanfixall]

Neither the glow plug threads are tapered or the injecter threads. They do not seal anything. They are there to hold the parts against the seats or the taper.. The seat is the injecter and the taper is the end of the plug below the threads...