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Torque Specs!

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budperm View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote budperm Quote  Post ReplyReply Direct Link To This Post Posted: November/04/2010 at 16:37
bump
"Peace is that brief glorious moment in history when everybody stands around reloading".
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Post Options Post Options   Thanks (0) Thanks(0)   Quote csacpt Quote  Post ReplyReply Direct Link To This Post Posted: November/04/2010 at 19:07
Vortex ring specs from their site:
 
http://www.vortexoptics.com/product/vortex-tactical-30mm-riflescope-ring-low

http://www.vortexoptics.com/product/vortex-precision-matched-rings-30mm-riflescope-low-height
 
  • Tighten rail mount bolt to 55 inch pounds.
  • Tighten scope ring fasteners to 20 inch pounds.

The smaller screws on the precision matched rings rail mount clamp are also 55 inch pounds. I called them to verify that.


PS: Just noticed I'm not a Grasshopper anymore. Does that mean I talk too much? LOL

Edited by csacpt - November/15/2010 at 21:40
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PONIESWHEE Quote  Post ReplyReply Direct Link To This Post Posted: November/11/2010 at 21:26
Not to confuse the matter, but I picked up a torque wrench today and the instructions make a distinction between lubed fasteners and non-lubed fasteners.

for example:

10-24 UNC Commonly used on scope base windage screws
lubed fastener  - 40-45 in-lbs
dry fastener      - 65 in-lbs

8-32 UNC Commonly used on scope rings
lubed fastener  - 28-30 in-lbs
dry fastener      - 60 in-lbs

6-32 UNC Commonly used on scope base mounts
lubed fastener  - 18-20 in-lbs
dry fastener      - 35 in-lbs

Is it safe to assume that most or all of the screws we deal with have some oil/loctite or some kind of lube on them? The dry specifications seem way too high. I went over all my guns and tightened the ring-to-base screws and stopped myself at around 45 in-lbs because it seemed like so much torque the screws would start stripping >.<   I think I would be afraid to get all the way to 65 in-lbs unless I was working with steel rings and bases. The cheap $12 rings on my lever action started to make scary creaky noises so I quit at around 40 in-lbs.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PONIESWHEE Quote  Post ReplyReply Direct Link To This Post Posted: November/15/2010 at 18:06
As a follow up to my previous post: I just got a TPS base and SWFA rings and cranked the ring-base screws up to 65in-lbs with no issues and no scary sounds of impending failure. Guess you get what you pay for Big Grin
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Post Options Post Options   Thanks (0) Thanks(0)   Quote supertool73 Quote  Post ReplyReply Direct Link To This Post Posted: November/15/2010 at 21:03
Yeah buddy.  TPS is good stuff  Excellent
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Post Options Post Options   Thanks (0) Thanks(0)   Quote budperm Quote  Post ReplyReply Direct Link To This Post Posted: November/25/2010 at 09:00
bump
 
 
Willc a moderator please pin this???
"Peace is that brief glorious moment in history when everybody stands around reloading".
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rancid Coolaid Quote  Post ReplyReply Direct Link To This Post Posted: April/20/2011 at 20:23
Why is this not stickied or pinned.
Dammit!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Roy Finn Quote  Post ReplyReply Direct Link To This Post Posted: April/20/2011 at 20:36
Done deal
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Post Options Post Options   Thanks (0) Thanks(0)   Quote darkman Quote  Post ReplyReply Direct Link To This Post Posted: December/26/2011 at 11:00
Gentlemen
      This has helped immeasurably. The rifle is in the vice with the base mounted. Warne had no torque values for the top of the rings. It looks like between 15-20 in lb will do the trick. Thank you very much.
there is no substitute for common sense...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote coyote95 Quote  Post ReplyReply Direct Link To This Post Posted: January/26/2012 at 18:49
http://www.talleymanufacturing.com/cgi-bin/public_controller.cgi?view=contact 
bases to receiver 25in/lbs 
permanent mount 1" rings bottom screw 30in/lbs 
"                                        " top screw 20in/lbs
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Post Options Post Options   Thanks (0) Thanks(0)   Quote cheaptrick Quote  Post ReplyReply Direct Link To This Post Posted: February/22/2012 at 11:09
ExcellentThanks for this great thread! 

I needed to know how much to torque my new Talley LW's today got on here, remembered this thread and ....viola! Excellent
 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Clark Quote  Post ReplyReply Direct Link To This Post Posted: April/20/2012 at 00:44
In calculating the max torque for scope base screws, the threshold between the male and female threads failing is at 1 to 1.2 times the screw root in engagement.

With that I can predict the failure threshold for various lubricants.

I do not verify with destructive tests on actual rifle receivers, but with equivalent soft steel plates of the same thickness.

Use  Unbrako screws [180 ksi steel]

If you are inclined to calculation and verification, I would suggest three levels:
1) Clean and dry
2) oil or grease
3) wax.

Calibrate the toque wrench with a weight measured on a balance beam.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote budperm Quote  Post ReplyReply Direct Link To This Post Posted: April/20/2012 at 12:01
Man I'm keeping my hand grenade!!! Wink
"Peace is that brief glorious moment in history when everybody stands around reloading".
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Post Options Post Options   Thanks (0) Thanks(0)   Quote FireEMT5 Quote  Post ReplyReply Direct Link To This Post Posted: April/20/2012 at 13:31
http://swfa.com/Aadland-Triple-Lug-30mm-Rings-P50709.aspx
Rings to base - 35 inch pounds
 
Ring cap screws - 15 inch pounds
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 338LAPUASLAP Quote  Post ReplyReply Direct Link To This Post Posted: November/04/2012 at 16:08
I think that this should be put into a format that Anyone can use. 

If we could identify the ring type or the base type and than identify the torque specs.

I personally would find great value in that and then I would hand it out to many people who ask.

Right now I just refer everyone to buy a Wheeler Torque Wrench and tell them not to exceed 20 on the rings and 50 on the bases.

I never knew I was so far off.

Hope no one ever broke anything...Big Grin

fwiw

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Urimaginaryfrnd Quote  Post ReplyReply Direct Link To This Post Posted: March/29/2013 at 20:42
Wouldnt it be nice it there was simply an industry standard. Head Banger  I can tell you that the tubes on Minox and Tasco are both on the SOFT end of the scale and crush easily at less than 25 inch pounds.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rancid Coolaid Quote  Post ReplyReply Direct Link To This Post Posted: March/30/2013 at 09:48
Who shat in my  thread?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote avery Quote  Post ReplyReply Direct Link To This Post Posted: April/27/2013 at 12:33
leupold PRW 30mm? I didn't see on here forgive me if I missed

Thanks,
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Post Options Post Options   Thanks (0) Thanks(0)   Quote cheaptrick Quote  Post ReplyReply Direct Link To This Post Posted: April/29/2013 at 18:01
Originally posted by avery avery wrote:

leupold PRW 30mm? I didn't see on here forgive me if I missed

Thanks,

The caps? I believe about 22 inch pounds. 25 inch pounds base to action. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jdgray Quote  Post ReplyReply Direct Link To This Post Posted: July/02/2013 at 08:20
Originally posted by Blackbird Blackbird wrote:

Ken Farrell products are as follows:
 

Rings torqued to base is 55-65 inch pounds

 

Ring tops torqued 15-20 inch pounds

 

Base screws: Front screw 20-25 inch pounds, all other base screws: 25-30 inch pounds

 

Also, people should realize the importance of "bedding" the base to the action, so as not to stress the action, or the scope. I have never had to lap any Farrell rings because his tolerances are second to none. I have never had 1 ring mark, on any scope that was removed from Farrell rings while using his base also. All good !


Just installed a set of Farrell rings.
Instructions say:
50-55in/lbs for ring to base screws
15-20in/lbs for ring cap screws

Not a big difference on the base, but is different.
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