Action Torque

S

SRE

New member
Can anyone give me what they use as a general guideline for action screw torque settings? I know it's somewhat a differing topic but I guess id like to know what others use as a general rule. Ive been just tightening all mine to "snug" all my life. But as i've built more and more custom long range varmint rigs... it makes sense to have both ( or however many screws) be uniform in their tightness. I do own a Weaver torque screwdriver, i'd just like to know what to set it on! I do know some manufacturers state different settings, but still would like to know what you guys do.

1) Setting for rimfire w/ composite or laminate stock...?
2) Setting for rimfire w/ wood stock...?
3) Centerfire w/ composite or laminate stock...?
4) Centerfire w/ wood stock....?

And with the centerfire, I mean standard calibers... no 500 nitro bolt action's in my safes.

THANKS GUYS!
 
S

Scorch

New member
50 inch-lbs. Works for just about everything. Some will tell you more or less for whatever stocks you may be working on, but 50 inch-lbs works well for everything.
 
C

Clark

New member
A lot of people ask this question and want to know what torque wrench to buy and what torque to tight their action screws to.

But I am not going to give an easy answer.
The maximum torque can be limited by the screw breaking or by the female threads stripping out.

1) The threshold between the two I read on this thread:
http://www.practicalmachinist.com/vb/general/tapped-thread-depth-strength-question-153783/

03-10-2008, dsergison
without all this math. which i despise. i will just tell you what caterpillar standard is.
1 to 1.2 x Dia in steel or cast iron. 1.5 - 2 x Dia in amuminum or other softer metals.

2) The maximum torque varies with lubrication, as friction distracts some force from stressing the threads.
From this link we can see that if a screw can take 100% torque dry and clean, then 75% with oil or grease, and 50% with wax.
http://www.zerofast.com/torque.htm

3) When there is enough engagement, different strength steels make for different screws make for different maximum torque.

So if you aware of engaugment, lubreication, and screw quality, then you can use this chart
http://www.derose.net/steve/resources/engtables/bolts.html
 
B

Bart B.

New member
Inch pounds of torque on stock screws with totally free floated barrels; only bare stock or epoxy bedded:

Rimfires, 20 to 30

Remington & Savage round receivers, 40 to 50

Win 70, 55 to 65

M1903, Mauser 98, 40 to 50

For pillar bedded, tight.
 
S

SRE

New member
thank you guys for your feedback! Bart B. this is basically what I was looking for. General guideline.
 
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