Modern suspension grease zerks....size?

[nmantas]

Stupid question of the day.

Since all modern parts are metric, are grease fittings typically metric? If so, does anyone know the popular size of the little self tapping grease fittings that you spin on tie rods, ball joints, bar links for passenger cars/trucks?

 

[ChevyEFI]

There are metric zerks, but aftermarket parts may use the common 1/4-28 stuff.

 

[DieselNut88]

I just bought a ac delco ball joint and messed up the threads. It was 1/4-28. Some are 6mm - 1.00

 

[BDT/NWMN]

I have both sae and metric grease fittings in threaded, drive in, and self tapping versions.

Add the straights, 45, and 90 degree fittings. That is 18 possible versions that come in multiple sizes.

I don't think there is anything stupid about the question at all. I am looking forward to reading the multiple answers.

 

[snyder]

1/4 28 and 1/8 npt seem to be the most popular on stuff I see.

 

[rlitman]

Stupid question of the day.

Since all modern parts are metric...

HA! That's a good one that MIGHT only apply to imported cars, but even then I've seen exceptions.

 

[matt_i]

I just bought a ac delco ball joint and messed up the threads. It was 1/4-28. Some are 6mm - 1.00

These are my experience, but from an industrial setting, have assortments of both 1/4-28, M6 x 1.0 and the pipe thread NPT 1/8-27 threads for various OEMs machinery some of which are euro.

 

[nmantas]

My issue is that I have two bar links that have two fittings each and after a few years only one works as it should.....the other ones need an adjustment on the grease gun tip then it goes on and you can't get it off and so on. Its the only fittings on the car and geez I never had issues on any other cars. Thinking of just replacing them with known quality because greasing four lousy fittings should not be a chore.....but you'd think aftermarket AC Delco 'professional' parts would be decent.

 

[MagnusM4]

I installed some Moog ball joints in my truck and the zerks were either 6 or 7mm, I can’t remember which.

 

[Jazz1]

Grease zerks will be colour coded when I am Grand Poobah
Blue - SAE
Red- Metric

 

[rlitman]

My issue is that I have two bar links that have two fittings each and after a few years only one works as it should.....the other ones need an adjustment on the grease gun tip then it goes on and you can't get it off and so on. Its the only fittings on the car and geez I never had issues on any other cars. Thinking of just replacing them with known quality because greasing four lousy fittings should not be a chore.....but you'd think aftermarket AC Delco 'professional' parts would be decent.

That’s the problem that the Lock-N-Lube was invented for. It releases with the press of the lever, and locks on solid at all other times. I can’t begin to describe the amount of frustration it has removed for me.

 

[matt_i]

Grease zerks will be colour coded when I am Grand Poobah
Blue - SAE
Red- Metric

I lol because metric screws are often coated blue as an identification...

 

[Tallpilot]

https://locknlube.com/products/comp...sae-and-metric-zerks-multi-tools-fitting-caps

 

[WagonHo!]

Lock n lube, Zoro and GFD the green anodized one.

 

[bwringer]

Very, very few OEM parts on passenger vehicles have grease zerks. And if they did, they would very likely be metric.

Aftermarket parts, it's a complete crapshoot what they're going to screw in there.

Or, maddeningly, what they're going to leave rolling around loose in the box for you to attempt to insert in a poorly tapped or untapped hole (lookin' at YOU, Moog, or whatever the hell is inhabiting Moog's corpse nowadays and peddling low-rent Chinese shite under that once-proud name).

 

[Farmall450]

M6 is what people generally confuse as 1/4". The head is somewhat flatter.

 

[Jazz1]

Lock n lube, Zoro and GFD the green anodized one.

Had not seen either of those, not that I’m surprised they are out there. Good stuff