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Old 12-07-2016, 03:12 PM   #1 (permalink)
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EM1 vertical adapter screw threading

Howdy all,

I'm currently working on a couple EM1 projects and I want to rig a bushy vertical adapter to the body so I can use aftermarket HPRs. Does anybody know what the threading is for this screw?

Thanks,
Jonny
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Old 12-07-2016, 05:45 PM   #2 (permalink)
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Fun! I'm toying with an EM1 I got somewhat recently. I don't know what the threading is but will be following your thread.
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Old 12-07-2016, 07:25 PM   #3 (permalink)
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Okie dokie, I'll update when I figure it out.
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Old 01-11-2017, 07:18 PM   #4 (permalink)
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I'm pretty sure it was a 1/8 npt. I guess you could check by seeing how well a regular macro fitting or something else you have laying around fits? (it may get tight as it threads in) npt holes are supposed to be taper reemed.... though it seems like some are of our npt holes are not...Come back and let me know and I'll dig around

so a 1/8 nps vented socket head screw is what you'd be after
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Old 01-12-2017, 09:18 AM   #5 (permalink)
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Quote:
Originally Posted by lpmaster View Post
I'm pretty sure it was a 1/8 npt. I guess you could check by seeing how well a regular macro fitting or something else you have laying around fits? (it may get tight as it threads in) npt holes are supposed to be taper reemed.... though it seems like some are of our npt holes are not...Come back and let me know and I'll dig around

so a 1/8 nps vented socket head screw is what you'd be after
It's close, but it's not the same. It may be a metric version of the standard fitting, but I'm not sure.

I still haven't had a chance to get to the hardware store to check threads, it's still on my radar.
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Old 01-12-2017, 09:37 AM   #6 (permalink)
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It's 3/8-24
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Old 01-12-2017, 10:30 AM   #7 (permalink)
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It's 3/8-24
Oh shoot that's right your pm got buried and I completely forgot about it.

Now it's just finding a vented screw in that threading.
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Old 01-12-2017, 11:18 AM   #8 (permalink)
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Now the issue I'm running into is finding a retailer that will sell me a few of these screws. The industrial shops only sell in $50 or more quantities.
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Old 01-12-2017, 11:29 AM   #9 (permalink)
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try this site?
Vented Fasteners

Scroll down a bit, they had some 3/8 24 vented screws, not sure which one you need exactly.
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Old 01-12-2017, 11:40 AM   #10 (permalink)
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Tried that one, $50 minimum order.
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