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4-40 screw help |
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ShadowRide 
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Joined: 11 January 2004 Status: Offline Points: 30 |
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 Topic: 4-40 screw helpPosted: 18 October 2006 at 12:16pm |
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I'm tapping 2 holes on my marker for some covers using a 4-40 tap..drilling and tapping is fine but does anyone know what 4-40 screws would be stronger or the strongest...Bought some machine screws from homedepot and they're just too weak..They snap in half...
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pattison
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Joined: 30 August 2002 Location: Korea, North Status: Offline Points: 384 |
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Posted: 18 October 2006 at 1:09pm |
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i'm surprised that you haven't stripped the 4-40 hole in the aluminum yet. i use nylon screws to avoid stripping my phantom, and thats size 6.
would you consider 6-32? it's much better for rough use. |
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Eat The Brisket
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ShadowRide
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Joined: 11 January 2004 Status: Offline Points: 30 |
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Posted: 18 October 2006 at 1:13pm |
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well the one that snapped was on a test piece..think it screwed in at an angle... tapped another hole and 4-40s screw in fine just don't know if i tighten too much if it'll snap too... 6-32 would be too big of a hole for the place i'm drilling...2-56 is factory setup but i did a 4-40.. I don't care as much if the threads get destroyed on the marker as much as i would if half the screw broke in the hole
Edited by ShadowRide - 18 October 2006 at 1:19pm |
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Shadowminion
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Strike 1 - Language, 3/20 Joined: 06 June 2004 Location: United States Status: Offline Points: 1625 |
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Posted: 18 October 2006 at 8:01pm |
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Try this place , look for grade 5 machine screws ,or allen head bolts . Regular grade 3 hardware (soft) is commonly available at any local hardware store , grade 5 and grade 8 (Aircraft Grade , and Very hard ) you may run across at specialty shops in local machine shops and specialty hardware supply houses . Edited by Shadowminion - 18 October 2006 at 8:04pm |
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SL68-II , micro honed and polished .688" bore . Tuff Enuf .
Widowmaker , under construction |
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ShadowRide
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Posted: 20 October 2006 at 1:04am |
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Thanks..totally forgot about mcmaster
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