Stripped screw then broke screw


Old 03-21-15, 07:09 PM
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Stripped screw then broke screw

I'm trying to install shelf under basement stairs. Tried to screw 3/4" furring strip to 2x4. First off stripped #10 3" Phillips screw. Got it out and drove another screw but this time it broke. So now I have part of screw in hole.

Stripping screws has happened before. Why??? Is it the bit? Cheap screws? My driving technique with drill? My project is on hold until I figure out what I,m doing wrong. And I thought driving the tapcon screws into the cinder block would be the problem!
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Old 03-21-15, 07:13 PM
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Welcome to the forums.

Three inch is a tad long for that job. You may have hit the wall. A 2" screw should be adequate.
Old 03-21-15, 07:37 PM
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2" or 2-3/8" is more than enough. Try a #3 Philips bit with the #10 screw, some have the larger head, some not. Also drill pilot holes.
Bar soap on threads or bee's wax also helps drive the screws in easier.
Old 03-21-15, 08:17 PM
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Pre-drill and run the threads across a bar of soap makes all the difference. When selecting a drill bit, hold it on top of the screw so that the drill is the same size as the solid part of the screw and you can still see the threads of the screw beyond the width of the drill.
Old 03-22-15, 05:55 AM
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Use 1 1/4" or 1 1/2" screws. Predrill the hole. Use #8 screws instead of #10. Use square drive instead of phillips.
Old 03-22-15, 12:57 PM
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Torx head decking screws work even better. Ditto on drilling pilot holes.

If the screw broke below the surface, drill a pilot hole and run in another screw at an angle using the same surface entry point.
Old 03-22-15, 01:17 PM
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It baffles me why Philips heads are still so common in the US. Robertson are superior for almost every application. You can even buy philips head deck or wood screws here in Canada without special ordering them.
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