kean57
Single-Sixer
What would be the correct o-ring size to use with Mark II grip screws? I'd love to hear from anyone who's actually used o-rings what size works best. Thanks!
O-rings for MK II grip screws
- Thread starter kean57
- Start date
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My advice is take the screw to your local ACE, HomeDepot, Menards, or XYZ home improvement/hardware store and test fit until you find the correct size.
contender
Ruger Guru
Why would you need an O-ring for the screws? Never known anybody to need any.
kean57
Single-Sixer
Some grips can be damaged by tightening the screws enough to prevent them from loosening under recoil. Using o-rings solves this problem.
Pat-inCO
Hawkeye
Wow. Another solution for a non existent problem.
Unless, of course you lubed the current set of screws.
woodsy
Blackhawk
Recoil being a problem with a .22 LR semi?
contender
Ruger Guru
I've been using Ruger MK series guns since the mid 1970's. I've still got a MKI 5-1/2" bull BBl that I've put 10's of thousands of rounds through. Plus,, I've got a MKII Competition Target that has seen a lot of competition as well as 10's of thousands of rounds as well. Neither one of those guns has ever had screws loosen, nor have I over-tightened grip screws.
Now,, the SA revolver guns. With a hollow space between each panel, and the often over-tightened grip screws HAS caused broken or damaged grip panels. In those guns, I place a nylon spacer between the panels.
But the MK series,, never heard of an issue.
Now,, the SA revolver guns. With a hollow space between each panel, and the often over-tightened grip screws HAS caused broken or damaged grip panels. In those guns, I place a nylon spacer between the panels.
But the MK series,, never heard of an issue.
NikA
Buckeye
If I had this issue, I would use blue thread locker on the screws. On a small screw like a grip screw, a soldering iron can be used to apply very localized heat to soften the threadlocker if/when removal is necessary.
If I was insistent on using o-rings to preload the grip screws, I would measure the size of the recess and buy the smallest cross section, lowest durometer o-rings with an OD close to that of the recess. It's generally not possible to get o-rings with a cross-section of less than 1mm, which seems pretty large to me in the context of preloading small screws.
I've sized o-rings for a number of hydraulic and hardware preload applications. The sizes are standard (with a couple flavors, SAE and metric at least) and the major retailers have charts with sizing info.
