×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

sheet metal / self-tapping screw withdrawal in wood

sheet metal / self-tapping screw withdrawal in wood

sheet metal / self-tapping screw withdrawal in wood

(OP)
I'm dealing with the connection of a cold formed steel track to a wood-framed roof, and can't fild withdrawal values for sheet metal screws in wood. Any ideas?

RE: sheet metal / self-tapping screw withdrawal in wood

Use screws designed for wood.  The threads on metal screws are too fine for wood and are not reliable fasteners in wood.  That's why you don't find values.

RE: sheet metal / self-tapping screw withdrawal in wood

(OP)
Really? the US dept of Ag says the capacity should be "about 10% greater than that for wood screws of comparable diameter and length of threaded portion" (Encyclopedia of Wood, p. 7-10), but self-tapping screws are not covered under NDS, so I was looking for design values elsewhere...

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources