I’ve had to reference back to these torque specifications a couple times, and thought it’d be helpful to post. It is a list of the recommended screw torque settings for most rifle parts, like action screw torque. These come from a lot of different sources (including manufacturers on the phone), but one great one is Brownell’s “Torque Specifications for Gunsmiths” Article. As that article explains, these specs are subject to change as companies change their manufacturing processes, materials, and design. However, many people believe consistent torque is at least as important as the actual number of inch/pounds (especially when talking about action screws). Here is an excerpt from that article that illustrates another great point to keep in mind:
For the gunsmith a torque specification is more of a guideline than a rule. Let’s consider the 15-17 in/lb specification offered by Leupold for their ring. Currently they’re using 8 x 40 torx head screws, applying 15-17 in/lbs would not cause the fastener to stretch and impart preload to the joint; but it will likely hold the scope tight enough to keep it from slipping and not damage the tube. However, if the front and/or rear ring was made out of spec, or if the height of the scope bases do not concur, or you are using an off brand scope, you may need to impart more torque to the ring screws to get them to hold the scope properly.
|Description||Recommended Torque (in/lbs)|
|Scope Base To Action Screw Torque Setting|
Screws that mount the rail to the action/receiver
|Scope Rings/Mount to Base Screw Torque Setting|
Screws that attach the rings or mount to the rail on the action. Sometimes also referred to as crossbolt.
|Scope Ring Screw Torque Setting|
Screws that tightens around the scope body (connecting the top half of the ring to the bottom half).
|Stock Action Screw Torque Setting|
Large screws that hold the stock to the action
Note: The mount shown in these photos is a Spuhr Ideal Scope Mount.