UM Tikka rings

[RPrimo]

I just received a set of UM Tikka rings for my new T3x Lite. I popped the plastic plugs from the threaded holes on the top rail and cannot, for the life of me, get the UM supplied threaded recoil pins screwed in by hand. I am assuming that there is still something in the threads. One of the pins screws in about half way and the other just gets started. I have tried dental picks and solvent but still no luck. I have swapped pins and each screws in the same per hole so I don't think it is the threaded pins. Any suggestions? I certainly don't want to take pliers to the pins and I do not have a bolt of the correct thread to chase the threads with. I appreciate any suggestions,

Rob

 

[Tullis94]

I always tighten them with pliers. Never had any issues with them not wanting to thread in though.

 

[Sundodger]

Thread chaser.

Do not use a tap

 

[Stud Duck]

Thread chaser.

Do not use a tap

Why no tap?

In their installation video, he mentions using a tap for the same situation the OP is in and I've previously been in. I used a tap without issue, but if there's something I don't know, I'd be happy to learn and may have a few more questions...like what is a thread chaser?

 

[Sundodger]

Why no tap?

In their installation video, he mentions using a tap for the same situation the OP is in and I've previously been in. I used a tap without issue, but if there's something I don't know, I'd be happy to learn and may have a few more questions...like what is a thread chaser?

many reasons, but it all comes down to taps cut and thread chasers clean threads.

There are TON’s of different tap classes for a single thread form. You have no way to know what the product was made to, or even if the threads were even cut instead of rolled or event cut with a tap at all. By using some random or even common tap (let’s say 3b) you will likely be removing base material, altering strength, torque/tension relationship, etc.

Here is an example of a thread chasing kit:

Pardon Our Interruption

If you can’t find a thread chaser get a grade 8/8.8 bolt and die in the size you need. Thread the die on, cut in the flutes, then unthread die to straighten the threads. Bam new thread chaser.

 

[realunlucky]

A tiny tap is like 3 dollars (unlike the entire chaser set) and the threads aren't really structural in this application so very little down side

Sent from my SM-S926U using Tapatalk

 

[Sundodger]

A bolt from the hardware store is cheaper than a tap, you don’t have to cut flutes, it just makes it easier. Without the flutes you just can’t go as far before cleaning out the threads. So it’s another couple min.