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Old 08-26-2019, 09:25 PM
pnut pnut is online now
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HOST torque settings?

My 4.0 HOST Tactical came back from STI after the rear sight broke off. It appears that they replaced the original HOST1 Trijicon plate with a HOST2 Trijicon plate. I mounted an SRO and took it to the range today to get it sighted in. The SRO mounting screws were blue locktited and secured “hand tight.” I painted witness marks on the 2 screws at 6 o’clock.

After getting it sighted in, I ran about 200 rounds through it in 95 degree weather. I checked the witness marks and they moved from 6 to 5 o’clock!!! I didn’t bring my hex wrenches with me to relighted and re-check zero.

So what is the proper torque for the Trijicon screws? And is blue loctite sufficient?
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Old 08-27-2019, 06:16 PM
RickRope RickRope is offline
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I think I’ve read 10-12 in/lbs.

I go hand tight plus a little with my torx wrench, mines never come loose. I don’t use Loctite.
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Old 08-27-2019, 06:28 PM
pnut pnut is online now
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Thanks. Just saw a video online and the guy said that STI recommends 18 in/lbs. I don’t have the link, but I’ll give it a try. I was a little worried about over torquing at first because I’ve stripped the holes before on my HOST1 plate, but I think the HOST2 plate is steel.
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  #4  
Old 08-27-2019, 07:10 PM
RickRope RickRope is offline
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Quote:
Originally Posted by pnut View Post
Thanks. Just saw a video online and the guy said that STI recommends 18 in/lbs. I don’t have the link, but I’ll give it a try. I was a little worried about over torquing at first because I’ve stripped the holes before on my HOST1 plate, but I think the HOST2 plate is steel.
I torqued my first set at 15 in/lbs. I had to use the mill to remove them.

The Host 2/DUO is steel.
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