Tikka slam fire PSA

[mxgsfmdpx]

The only time the larger M6 screw for the trigger main assembly has ever come loose is when the trigger has been modified. It won’t come loose if it’s not dicked around with.

Last I remember, 8 newton meters was the spec for that M6 screw which is somewhere around 70 inch lbs.

 

[Marbles]

The only time the larger M6 screw for the trigger main assembly has ever come loose is when the trigger has been modified. It won’t come loose if it’s not dicked around with.

Last I remember, 8 newton meters was the spec for that M6 screw which is somewhere around 70 inch lbs.

Mine are at 80 in.lbs. (about 9 Nm) with thread locker.

The Sako trigger screw I just grabbed is a property class 12.9, so torquing to 18 Nm (159 in.lbs.) would be within its working spec.

I'll go dig out a Tikka screw. --> also class 12.9.

 

[mxgsfmdpx]

Mine are at 80 in.lbs. (about 9 Nm) with thread locker.

The Sako trigger screw I just grabbed is a property class 12.9, so torquing to 18 Nm (159 in.lbs.) would be within its working spec.

I'll go dig out a Tikka screw. --> also class 12.9.

I’ve tightened multiple of them well past 80” lbs as well with no issues so far.

 

[fraz01]

Has anyone ever measured how much it takes to break torque on a factory installed screw? Do they recommend replacing the screw if it's removed?

 

[SloppyJ]

First time ive seen this and its good to know. Just more reason not to dick around with the trigger other than backing off the adjustment.

Certainly not an isolated Tikka issue. I have a 1960s Model 100 where the trigger was loose and it wouldn't let the bolt come back. Had to carefully break the stock to get it fixed. Sucks when there's a live .243 round stuck in there.

Just more reason to go through your rifles in entirety.