Repaired Stripped threaded hole in my UTG universal adapter.
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Repaired Stripped threaded hole in my UTG universal adapter.
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Topic: Repaired Stripped threaded hole in my UTG universal adapter. (Read 402 times))
nced
GTA Senior Contributor
Posts: 6072
Real Name: Ed
Repaired Stripped threaded hole in my UTG universal adapter.
«
on:
June 07, 2021, 10:52:08 PM »
In the past I had issues with the screws of my BKL one piece scope mount strip when over torquing trying to get the things to stay put on my HW receiver. Well......I over torqued a base screw in this UTG adapter and stripped "base screw hole threads" so I decided to do a more permanent fix that would still fit the adapter.......
My solution? Replace the aluminum threads with home rolled steel threaded inserts.
1. Drill out the 4mm threads with a 4mm drill and the 5mm threads with a 5mm drill bit...........
2. Turn a scrap steel rod so it's a bit larger than 5mm and turn down rod end for a light press fit in the 5mm adapter drilled holes ........
3. Center drill the rod and then drill a "#30 drill bit hole" in the rod and tap for a M4-0.7 screw.......
4. Part off the end of the rod leaving a short flange as a stop.........
5. Blacken the threaded inserts by coating with oil and heating with a propane torch...........
6. Press the inserts into the 5mm holes with red thread locker..........
7. Tighten M4-0.7 x 22mm cap screws into the tapped inserts through the 4mm drilled holes opposite the inserts.........
MY UTG adapter "base clamp screws" now have steel threads to engage so they won't strip out.
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USA, North Carolina, Rougemont
JuryRigger
NUAH Club Member
GTA Senior Contributor
Posts: 4008
Pop-Whiz-Clunk! :D
Real Name: Jesse
Re: Repaired Stripped threaded hole in my UTG universal adapter.
«
Reply #1 on:
June 07, 2021, 11:20:23 PM »
Looks mighty professional; a good fix!
Jesse
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Ohio
"Genius errs, if possible, more badly than pedantry. But mathematics, properly directed, cannot fail"-Captain Nemo
"Numbers don't lie until they're cherry-picked statistics"-Forest Addy
"You've got to keep your ego in check!"-Paul Harrell
"If you are trained, you will do what you're trained to do-if you're untrained you'll flop around like a fish"-Paul Harrell
BigBird
Expert
Posts: 1397
yes
Real Name: Dan
Re: Repaired Stripped threaded hole in my UTG universal adapter.
«
Reply #2 on:
June 07, 2021, 11:40:01 PM »
I like it. I always overtighten everything.
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USA, VA, Winchester
For God did not send his Son into the world to condemn the world, but in order that the world might be saved through him.
John 3:17 ESV
OTmachine
Sharp Shooter
Posts: 767
it'll shine when it shines
Real Name: Keith
Re: Repaired Stripped threaded hole in my UTG universal adapter.
«
Reply #3 on:
June 08, 2021, 12:17:28 AM »
Nice DIY nutserts! Thanks for sharing!
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USA, Central WI
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Repaired Stripped threaded hole in my UTG universal adapter.