[Engr]

Is there any standard for Thread Laps in Self Tapping Screws

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for full context, visit https://www.polytechforum.com/metalw...ws-648818-.htm

[Bob La Londe[_7_]]

On 9/16/2019 7:18 AM, Engr wrote: Is there any standard for Thread Laps
in Self Tapping Screws


Thread "laps"?

If you mean pitch. No not really. Those for sheet metal tend to have
large modestly course pitch threads. Others can be different. Trailer
deck screws or others intended to mount to structural steel often have
thread that looks more like a fine pitch machine thread. Drywall screws
for use with metal studs have a fine pitch because it has to hold in one
layer of sheet metal as opposed to pulling two pieces of sheet metal
together

[Jim Wilkins[_2_]]

"Bob La Londe" wrote in message
...
On 9/16/2019 7:18 AM, Engr wrote: Is there any standard for Thread
Laps in Self Tapping Screws


Thread "laps"?

If you mean pitch. No not really. Those for sheet metal tend to
have large modestly course pitch threads. Others can be different.
Trailer deck screws or others intended to mount to structural steel
often have thread that looks more like a fine pitch machine thread.
Drywall screws for use with metal studs have a fine pitch because it
has to hold in one layer of sheet metal as opposed to pulling two
pieces of sheet metal together


https://www.afi.cc/blog/screw-points-guide

[RangersSuck]

On Monday, September 16, 2019 at 5:36:23 PM UTC-4, Jim Wilkins wrote:

https://www.afi.cc/blog/screw-points-guide

Very informative. Would have been worlds better with pictures.

[Jim Wilkins[_2_]]

"rangerssuck" wrote in message
...
On Monday, September 16, 2019 at 5:36:23 PM UTC-4, Jim Wilkins
wrote:

https://www.afi.cc/blog/screw-points-guide

Very informative. Would have been worlds better with pictures.

I have antenna TV, not cable, and enough dial-up and cellular Internet
access for my own mainly text reading needs but not much to spare. I
won't be offended if you find and post a reference you like better.

[RangersSuck]

On Tuesday, September 17, 2019 at 5:41:31 PM UTC-4, Jim Wilkins wrote:
"rangerssuck" wrote in message
...
On Monday, September 16, 2019 at 5:36:23 PM UTC-4, Jim Wilkins
wrote:

https://www.afi.cc/blog/screw-points-guide

Very informative. Would have been worlds better with pictures.

I have antenna TV, not cable, and enough dial-up and cellular Internet
access for my own mainly text reading needs but not much to spare. I
won't be offended if you find and post a reference you like better.

'twasn't a swipe at you, just saying it would be great to combine their excellent textual descriptions with some line drawings.

Also, you can thank me for having trimmed the post to a reasonable size .

[Larry Jaques[_4_]]

On Tue, 17 Sep 2019 17:41:36 -0400, "Jim Wilkins"
wrote:

"rangerssuck" wrote in message
...
On Monday, September 16, 2019 at 5:36:23 PM UTC-4, Jim Wilkins
wrote:

https://www.afi.cc/blog/screw-points-guide

Very informative. Would have been worlds better with pictures.

I have antenna TV, not cable, and enough dial-up and cellular Internet
access for my own mainly text reading needs but not much to spare. I
won't be offended if you find and post a reference you like better.

Text OK, but the video wasn't just bad, it was misleading. The vid
showed more screw heads than points. Ridiculously lousy vid. Boo on
the hardware-ignorant secretary who made it up for them.

https://www.instockfasteners.com/TOOLS/screwpoints.ASP
Much better. A line of text description and small pic that even Dialup
Jim(tm) could download! One for each type. This is the one I used
to find the best deck screws (type 17) years ago.

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