Gun Maintenace and Repair - 4-40 screw help

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4-40 screw help

Printed From: Tippmann Paintball
Category: Paintball Equipment
Forum Name: Gun Maintenace and Repair
Forum Description: Important info for keeping your marker in top shape
URL: http://www.tippmannsports.com/forum/wwf77a/forum_posts.asp?TID=160820
Printed Date: 19 December 2025 at 3:38pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: 4-40 screw help

Posted By: ShadowRide
Subject: 4-40 screw help
Date Posted: 18 October 2006 at 12:16pm

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...

Replies:

Posted By: pattison
Date Posted: 18 October 2006 at 1:09pm

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

Posted By: ShadowRide
Date Posted: 18 October 2006 at 1:13pm

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

Posted By: Shadowminion
Date Posted: 18 October 2006 at 8:01pm

Try this place , look for grade 5 machine screws ,or allen head bolts .

http://www.mcmaster.com/ - http://www.mcmaster.com/

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 .

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SL68-II , micro honed and polished .688" bore . Tuff Enuf .
Widowmaker , under construction

Posted By: ShadowRide
Date Posted: 20 October 2006 at 1:04am

Thanks..totally forgot about mcmaster