Model Railroading > Whats this tool?

Any idea what this rusty estate sale prize might be?
It looks like a drill bit with a very long flute?
The writing on it says 1 1/2 x 12 Stanley (maybe) 1525.

Anybody know what this was used for?
Clarence G

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Screw pilot hole bit for #12 screw.

I have also used them as a countersink if I don't have a countersink drill bit of the appropriate size.



Edited 1 time(s). Last edit at 02/10/18 21:47 by Cupolau.

So have I - I have a set of them...

Bill Deaver
Tehachapi, CA

Every screw driven into the benchwork of my layout was preceded by the use of such a tool. Drill the pilot hole, excavate the countersink for the screw head all in one shot. Screws drive in effortlessly afterward....speeds up things considerably.

Bob

Get them or similar ones at most hardware stores have those and other types in my collection of tools, four tool boxes by the way one full of my ex work tools all Snap On.

I just never saw a drill bit with a long, I guess it's called a flute, before. Usually they're more twisty. Maybe I'm used to seeing metal work bits.
Clarence

Use of a pilot bit also seriously reduces the chances of splitting out the end of a piece of wood. I'm never is so much of a hurry to build something that I can't take the time to drill a pilot hole first. Just because many screw types will self-drill into a piece of wood doesn't necessarily mean they should be used that way in all circumstances.

Jeff Johnston
www.trainvideosandparts.com

There is several variations of this tool. the one in the picture is for ( Wood Screws) as wood screws have a taper to them. I have several styles including Carbide counter sinks with regular style drill bits set in the center with an Allen set screw.



Edited 1 time(s). Last edit at 02/12/18 21:34 by czuleget.

czuleget Wrote:
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> There is several variations of this tool. the one
> in the picture is for ( Wood Screws) as wood
> screws have a tapper to them. I have several
> styles including Carbide counter sinks with
> regular style drill bits set in the center with an
> Allen set screw.

Taper- "a reduction in diameter through its length"- (not tapper). No ill feelings intended. I can misspell myself.