A couple decades ago, I ran across a handfull of self-tapping screws.
They were like sheet metal screws, but with skirted hex heads. These
were about 1/2" long and 1/4" dia. I'd seen them used with a special
head on a drill motor, it having a hex chuck that would ratchet when the
screw bottomed out. What amazed me about these was the fact they where
not only self-starting AND self-tapping, but they where pretty damn
hard. In experimenting, I discovered they tapped and screwed into an
old BSA motorcycle frame like it was soft pine.
I now find myself in need of something like this and was wondering just
what, exactly, do I ask for when I go down to the hardware store.
I just used some self-tapping screws for a project that I bought at
Lowes. They included
a rubber washer and a metal washer, already installed on the screw.
They go in using
a driver/drill. The rubber washer gives it some give and I used them
to fasten plastic
I see many different types, there. Thanks for that.
I guess I should have been a little more specific, in that I was looking
for a self-tapping screw that would easily penetrate soft or low-carbon
steel, like the one's I used on the Limey motorcycle frame. Is that a
special type, or do they all do that? I'm looking to use the screws to
punch through and lock up the louvre adj linkage on a forced air heat
register, which is stamped steel. Thnx.
There are many different styles of Tek screws. Some have little ears
above the drill bit to widen a hole through wood when wood is being
fastened to metal beams. If you search Tek or drill point screws,
you'll probably come across the exact screw you have used.
There are different types of screws: The self-drilling and self-tapping.
One simply brings the point of the screw to a fine point with the threads
going all the way to the end. They're good for sheet metal or most sheet
BTW, your motorcycle or whatever it was is likely to be soft steel; it
has to have five to it in order to not crack or break upon hard hits on the
screw during riding. I know the frames on Harleys and Hondas are soft steel,
depending on what part you'\re looking at; like the frame itself, front
The other type, the threads don't go all the way to the point. However, the
point is shaped almost like drill bit and some are fluted, to pull the
debris out, within reason. The length of the drill-looking part is the depth
of steel max it can be used on. All kinds of sizings are available.
See http://www.imperialinc.com/items.asp?item 01330 for a sample pic.
Unless I'm doing sheet metal type stuff, I like those the best because it
pre-drills the hole for istelf all the way in, the larger threads providing
the actual holding power like any other screw.
Either type should work for you.
TEK screws. Sold at Lowes, HD and Ace. Cheaper by the box of 100 but that
depends on how many you need.
I use the #6 x 1/2 to drill the hard coat on plaster. Cheaper and safer
than drill bits for the same job. Of course my price is based on a bag of
500 at one time so YMMV.
On Dec 16, 5:24 am, notbob < firstname.lastname@example.org-
As everyone else has replied.... called Tek Screws (like Cleanex).
I have found that the screws available at HD (Western States Mfg?)
have slightly shorter heads (~1/32 or so) than the ones I've gotten
These slightly shorter heads do not engage in the my hex drivers as
well as the McMaster ones.
These self tapping screws work best if you really "lean into them",
the HD ones have a tendency to "tip over" when really leaned into.
Just a heads up YMMV
On Dec 16, 8:24 am, notbob < email@example.com-
I am surprised that no one has mentioned McFeely's yet. You need to
for a great selection of excellent screws.
No affiliation, just a very satisfied customer.
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