- Feb 17, 2011
- 14,024
I have been told Moly grease for the barrel nut threads is the spec per the TM but would mobil 1 syth grease be a decent substitute since I use that shit on everything?
AR15 Barrel Nut Threads - What grease?
- Thread starter jrumann59
- Start date
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The TM should (it's been many years since I looked) list the specification to be used for the MolyB Grease. I'm not sure that Mobil 1 Synth Grease meets that specification. I know that AeroShell 33ms does. Just google search that Milspec number and it should give the answer.
ETA: It should meet MIL-G-21164 according to the TM. A google search suggests Mobil 28 meets that specification.
ETA: It should meet MIL-G-21164 according to the TM. A google search suggests Mobil 28 meets that specification.
- Feb 17, 2011
- 14,024
It is aeroshell 33ms is whats recommended. I am looking for a decent substitute since its purpose is more for anti-seize than anything else.
You got me. Though if you are close to Frederick, I would gladly give you some AeroShell; I have enough for several lifetimes.
clandestine
AR-15 Savant
Aeroshell 64 33MS is what I use. It tends to give more leeway when using the proper torque specs and makes for easy barrel removal.
Can't say the same for other greases.
Can't say the same for other greases.
You can buy a huge tube for peanuts.
EP Moly grease. The Mil Spec isn't specifically for Aeroshell. The point of the spec is a high temp, extreme pressure, molybdenum disulfide grease that doesn't contain Graphite. The grease is to prevent galling and provide smooth torquing. The no Graphite is because when the armories and depots were replacing barrels on the A1 rifles in the '70s they were finding pitting of the aluminum upper receiver threads that they attributed to electrolytic corrosion due to the graphite in the wheel bearing grease they had been using.
Not an expert, just a graduate of the Armorer's school at Aberdeen - which means I'm qualified to say "Yep, it's broke." and BCM it on to the Depot.
Not an expert, just a graduate of the Armorer's school at Aberdeen - which means I'm qualified to say "Yep, it's broke." and BCM it on to the Depot.
- Oct 8, 2007
- 19,012
I save all the copper grease off my glocks
I'll second this regarding the pitfalls of graphite anywhere around aluminum, especially anytime there is the slightest chance of moisture.
I have worked on salt water boats for years and graphite ANYTHING is an extreme no-no because of electrolytic corrosion. Graphite is at the extreme top end for causing electrolytic corrosion. That's why carbon, which is what graphite is, is the tried and true cathode in dry cell batteries. At the extreme other end of the galvanic table are the materials that the sacrificial anode and are corroded away...eaten alive. These are magnesium, zinc and, close to them, aluminum.
- Feb 17, 2011
- 14,024
Thanks guys picked up some 2 oz containers off Amazon.
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