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Posted: 9/23/2016 11:58:38 AM EDT
[#1]
It should be torqued within the manufacturer's specs.
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Posted: 9/23/2016 12:43:37 PM EDT
[#2]
It came in a cardboard box only, no instructions or torque information. It's a simple round tube with a threaded barrel nut all aluminum. Didn't know if could torque it like a regular steel but 35+ lbs?
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Posted: 9/23/2016 12:53:31 PM EDT
[#3]
I have an older YHM tube, which has an aluminum barrel nut.
Their instructions did not specify a torque range, only to hand tighten then with a wrench tighten until you achieve proper alignment with the gas tube. |
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Posted: 9/23/2016 12:54:01 PM EDT
[#4]
Quote HistoryQuoted:
It came in a cardboard box only, no instructions or torque information. It's a simple round tube with a threaded barrel nut all aluminum. Didn't know if could torque it like a regular steel but 35+ lbs? You can easily get 35+ pounds on those round nuts that come with free floats, it is not butter. |
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Posted: 9/24/2016 9:14:17 AM EDT
[#5]
My SLR handguard uses an aluminum nut, no problem. Just use common sense when tightening, 35 or 40 lbs OK, 80 lbs NFG. Personally, I don't own or use a torque wrench for barrel nuts. They make sense at high numbers as in engine cylinder heads, but not for AR rifles and aluminum threads. - CW
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Posted: 9/24/2016 9:54:17 AM EDT
[#6]
Even though the mil-spec maximum is 80 ft/lbs, the aluminum threads on the upper are good to somewhat over 100 ft/lbs using a steel nut.
It is usually best to follow the manufacturer’s recommendations. |
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Posted: 9/25/2016 3:25:30 AM EDT
[#7]
I have Al barrel nuts on 2 builds and have had no issues torquing them down. I used around 40 - 50lbs IIRC.
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Posted: 9/25/2016 8:56:28 AM EDT
[#8]
My 300 blk has a free float with an aluminum barrel nut, I torqued three times, then went enough to align the gas tube and then hit the set screws, I believe when it was all said and done I ended up at 45 lbs or there abouts, no problems at all with it and it now has over 1000 rounds down range on it.
Aluminum is not as delicate as some think, the ones I have installed are 7075-T6 and are very durable. |
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Posted: 9/25/2016 11:29:05 AM EDT
[#9]
dont get what being a 300BLK has to do with aluminum barrel nuts ? I dont have a 300 are they known for blowing off barrel nuts or something ?
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Posted: 9/25/2016 12:28:34 PM EDT
[#10]
Quote HistoryQuoted:
dont get what being a 300BLK has to do with aluminum barrel nuts ? I dont have a 300 are they known for blowing off barrel nuts or something ? No, they are not. They are not any worse than any other AR platform gun. |
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