AXSR Action screws

T

tna9001

Gunny Sergeant
Full Member
Minuteman
Aug 4, 2017
609
327
Asheville NC
#1
Hello All,

How are you torquing the #2 action screw? It looks to me that you'd have to use a ball end bit but, wouldn't that make the torque required to meet the spec higher?

Saying it another way, do ball end hex bits apply the same force to the screw for a given torque setting on the wrench as a regular bit?

Thanks for the replies!


IMG_5088.jpeg
 
#2
Looking at the whole page of the manual, it recommends using a 5/32" ball end wrench for fastener #2 so I'd think if A.I. is putting it in their manual, they've determined it to be safe, just don't use a junky bit. I use an extended 3/16" ball end bit from Fix It Sticks to torque the action screws on my AX AICS chassis to 65 in/lbs and have never had any issues.

AXSR-Manual.jpg
 
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#3
Trigger Monkey said:
Looking at the whole page of the manual, it recommends using a 5/32" ball end wrench for fastener #2 so I'd think if A.I. is putting it in their manual, they've determined it to be safe, just don't use a junky bit. I use an extended 3/16" ball end bit from Fix It Sticks to torque the action screws on my AX AICS chassis to 65 in/lbs and have never had any issues.

View attachment 8531908
Click to expand...
I saw that, it’s just counter intuitive, not that my intuition means anything. It just seems from a mechanical standpoint that the applied torque would be different between a bit at an angle versus straight on.
 
#7
The fix it sticks bits are trash. Limiters are great but their bits are trash. Replaced all of mine with either Milwaukee, Wiha, and Wera.

But fuck that bolt placement lol. Truth be told, I started to strip the bolt using the FiS extended ball but and should (aka need to) replace the bolt.

That said, just get a good ball bit and torque it to spec.


—-unrealated—-

Anyone have the AXSR action bolt spec?
 
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#8
About the overthinking. I talked to two engineers I know, one structural and the other aeronautical. They both said the same thing (as I understood). Using a ball head driver will result in a decrease in torque for a given torque input to the driver because the torque is being applied off axis from the fastener, the greater the angle off axis, the greater the discrepancy.

So, the action screws on the AXSR are supposed to be torqued to 49 in-lb, if you set your torque wrench to 49 in-lb and use a ball head driver and the driver is off axis relative to the fastener then the fastener will be tightened to a value less than 49 in-lb. They also said that there isn't a standardized correction factor. My AXSR shoots just fine with that one fastener being set to an unknown torque setting, it just seems odd that a company like AI would create a design where a deterministic variable like a specific torque setting is now just another variable with no definition.
 
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#9
Sorry to necro this thread but on page 49 of the AXSR user manual it says to torque the action screws to 53 in-lbs and the chart on page 10 says to torque the actions crews to 49 in-lbs. So there are two different torque recommendations on two different pages within the official AXSR user manual. Clearly the copy-editor needed to take another pass and no one at Accuracy International has decided to fix this despite the AXSR being available to the public for nearly a decade now.

Also, anyone know why they moved to 5/32 with the AXSR when the AX was 4mm and the AT-XC is 4mm?
 
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#15
Every time we discuss the ATX (C) or AXSR platform it makes me appreciate the OG’s like AT/AX and AXMC that much more

The ATX I had you basically had to dismantle the rifle to check the action screws

#bondedforlifehomie
 
#17
hafejd30 said:
Every time we discuss the ATX (C) or AXSR platform it makes me appreciate the OG’s like AT/AX and AXMC that much more

The ATX I had you basically had to dismantle the rifle to check the action screws

#bondedforlifehomie
Click to expand...
I was literally just saying this. Ive had an axsa, now an atx and axsr. I had net zero problems with the axsa and ive had no issues with my atx over three barrels now. They should have never stopped bonding the action and chassis and this would have been a non issue. I blue loctited the action screws back in after removing the mag catch. I almost used red cause I'm not doing this crap again. They were loose from PO and i rounded #2 using an appropriate tool from snap on so the ball head socket was not junk nor did I over torque anything. This is a design issue and an issue a $12,000 rifle should not have. Moral of the story don't check your action screws, shoot them loose, and a wandering a zero and lose action is totally fine. It is not worth the headache of rounding #2 and having to remove the mag catch to get it out. The mag catch is an absolute nightmare.
 
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#18
71firebird400 said:
Always a fight with any sort of service on an AI. I had a tough time with Mile High last time something broke.
Click to expand...
Patricia was fairly dismissive at AINA. Polite enough however. Gave her my query, she put me on hold, asked a question to who I am assuming handles warranty claims and her response was rounded action screws are not covered under warranty. She referred me to mile high and i started laughing. Told her that's who referred me to them. I called mile high back and ordered 5 new action screws to just have on hand. All this being said, the only reason I still own AI's is from a conversation I had with paul at wintac who apparently owns a portion of AI. That dude sold me for life. It was an hour long conversation and a great chat. Can't speak highly enough about the man without having met him.
 
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