Installing an old mortise lockset into a front door. Lockset was purchased (quite pricey with door knobs, cover plates etc.) from a restoration hardware place. They reconditioned all the parts and patinated (sp?) them all to look similar.

Problem: The threaded lock cylinder needs to be fixed from rotation with a radially applied screw that is over 2-1/4 inches long. The existing threads in the bronze casing is 8-32. I have three choices:
1) Find a screw of the proper length and 8-36 thread with a fillister head
2) Find any long 8-36 screw and turn down the head to fit the hole
3) Re-tap the threads for 8-32 which opens a whole world of screws.

The problem with option 3 is that all of my 8-32 taps (I have over 50) are about a 1/4 to a 1/2 inch too short. Have any of you successfully lengthened an existing tap? I have mig, tig & oxy but am worried about axial alignment on the tap extension.

What are the probable result of re-tapping an 8-36 to an 8-32 in bronze? Will I end up with a crappy loose thread fit?

BTW, tried McMaster-Carr and Fastenall. At McMaster I cannot find 8-36. At Fastenall, I do find 8-36 but maximum length is 1-1/4 inches. I would need to buy quantity 100 but at least I would get to practice my screw-lengthening skills which should be easier than tap-lengthening.

All advice appreciated.

Ivan Vegvary

On Mon, 1 Aug 2011 21:46:33 -0700 (PDT), Ivan Vegvary
wrote:

Installing an old mortise lockset into a front door. Lockset was purchased (quite pricey with door knobs, cover plates etc.) from a restoration hardware place. They reconditioned all the parts and patinated (sp?) them all to look similar.

Problem: The threaded lock cylinder needs to be fixed from rotation with a radially applied screw that is over 2-1/4 inches long. The existing threads in the bronze casing is 8-32. I have three choices:
1) Find a screw of the proper length and 8-36 thread with a fillister head
2) Find any long 8-36 screw and turn down the head to fit the hole
3) Re-tap the threads for 8-32 which opens a whole world of screws.

The problem with option 3 is that all of my 8-32 taps (I have over 50) are about a 1/4 to a 1/2 inch too short. Have any of you successfully lengthened an existing tap? I have mig, tig & oxy but am worried about axial alignment on the tap extension.

What are the probable result of re-tapping an 8-36 to an 8-32 in bronze? Will I end up with a crappy loose thread fit?

BTW, tried McMaster-Carr and Fastenall. At McMaster I cannot find 8-36. At Fastenall, I do find 8-36 but maximum length is 1-1/4 inches. I would need to buy quantity 100 but at least I would get to practice my screw-lengthening skills which should be easier than tap-lengthening.

All advice appreciated.

Ivan Vegvary

Open it up to 10-32 and use a nice fresh screw.

Gunner

--
"The danger to America is not Barack Obama but a citizenry
capable of entrusting a man like him with the Presidency.
It will be far easier to limit and undo the follies of an
Obama presidency than to restore the necessary common sense
and good judgment to a depraved electorate willing to have
such a man for their? president.. Blaming the prince of the
fools should not blind anyone to the vast confederacy of
fools that made him their prince".

In article

,
Ivan Vegvary wrote:

Installing an old mortise lockset into a front door. Lockset was purchased
(quite pricey with door knobs, cover plates etc.) from a restoration hardware
place. They reconditioned all the parts and patinated (sp?) them all to look
similar.

Problem: The threaded lock cylinder needs to be fixed from rotation with a
radially applied screw that is over 2-1/4 inches long. The existing threads
in the bronze casing is 8-32. I have three choices:
1) Find a screw of the proper length and 8-36 thread with a fillister head
2) Find any long 8-36 screw and turn down the head to fit the hole
3) Re-tap the threads for 8-32 which opens a whole world of screws.

The problem with option 3 is that all of my 8-32 taps (I have over 50) are
about a 1/4 to a 1/2 inch too short. Have any of you successfully lengthened
an existing tap? I have mig, tig & oxy but am worried about axial alignment
on the tap extension.

What are the probable result of re-tapping an 8-36 to an 8-32 in bronze?
Will I end up with a crappy loose thread fit?

BTW, tried McMaster-Carr and Fastenall. At McMaster I cannot find 8-36. At
Fastenall, I do find 8-36 but maximum length is 1-1/4 inches. I would need
to buy quantity 100 but at least I would get to practice my screw-lengthening
skills which should be easier than tap-lengthening.

All advice appreciated.

Ask around (with the name of the lockset manufacturer in hand) at the
local locksmiths. The old ones are often packrats.

If local doesn't do it, ask at "alt.locksmithing".

Joe Gwinn

As a practicing locksmith (with very few calls, due to the
NYS economy) your best bet is what Joseph said, call
locksmiths near you. I may have an old mortise lockset or
two, around.

You may be able to use a shorter screw, if you're willing to
grind down a screw driver, to fit through the small edge
hole.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"Ivan Vegvary" wrote in message
...
Installing an old mortise lockset into a front door.
Lockset was purchased (quite pricey with door knobs, cover
plates etc.) from a restoration hardware place. They
reconditioned all the parts and patinated (sp?) them all to
look similar.

Problem: The threaded lock cylinder needs to be fixed from
rotation with a radially applied screw that is over 2-1/4
inches long. The existing threads in the bronze casing is
8-32. I have three choices:
1) Find a screw of the proper length and 8-36 thread with a
fillister head
2) Find any long 8-36 screw and turn down the head to fit
the hole
3) Re-tap the threads for 8-32 which opens a whole world of
screws.

The problem with option 3 is that all of my 8-32 taps (I
have over 50) are about a 1/4 to a 1/2 inch too short. Have
any of you successfully lengthened an existing tap? I have
mig, tig & oxy but am worried about axial alignment on the
tap extension.

What are the probable result of re-tapping an 8-36 to an
8-32 in bronze? Will I end up with a crappy loose thread
fit?

BTW, tried McMaster-Carr and Fastenall. At McMaster I
cannot find 8-36. At Fastenall, I do find 8-36 but maximum
length is 1-1/4 inches. I would need to buy quantity 100
but at least I would get to practice my screw-lengthening
skills which should be easier than tap-lengthening.

All advice appreciated.

Ivan Vegvary

On Aug 1, 11:46*pm, Ivan Vegvary wrote:
Installing an old mortise lockset into a front door. *Lockset was purchased (quite pricey with door knobs, cover plates etc.) from a restoration hardware place. *They reconditioned all the parts and patinated (sp?) them all to look similar.

Problem: The threaded lock cylinder needs to be fixed from rotation with a radially applied screw that is over 2-1/4 inches long. *The existing threads in the bronze casing is 8-32. *I have three choices:
1) Find a screw of the proper length and 8-36 thread with a fillister head
2) Find any long 8-36 screw and turn down the head to fit the hole
3) Re-tap the threads for 8-32 which opens a whole world of screws.

The problem with option 3 is that all of my 8-32 taps (I have over 50) are about a 1/4 to a 1/2 inch too short. *Have any of you successfully lengthened an existing tap? *I have mig, tig & oxy but am worried about axial alignment on the tap extension. *

What are the probable result of re-tapping an 8-36 to an 8-32 in bronze? *Will I end up with a crappy loose thread fit?

BTW, tried McMaster-Carr and Fastenall. *At McMaster I cannot find 8-36.. *At Fastenall, I do find 8-36 but maximum length is 1-1/4 inches. *I would need to buy quantity 100 but at least I would get to practice my screw-lengthening skills which should be easier than tap-lengthening.

All advice appreciated.

Ivan Vegvary

McMaster Carr lists a carbon steel 8-36 die for $11.80
http://www.mcmaster.com/#dies/=djwfb3

On Aug 9, 10:01*pm, "Denis G." wrote:
On Aug 1, 11:46*pm, Ivan Vegvary wrote:





Installing an old mortise lockset into a front door. *Lockset was purchased (quite pricey with door knobs, cover plates etc.) from a restoration hardware place. *They reconditioned all the parts and patinated (sp?) them all to look similar.

Problem: The threaded lock cylinder needs to be fixed from rotation with a radially applied screw that is over 2-1/4 inches long. *The existing threads in the bronze casing is 8-32. *I have three choices:
1) Find a screw of the proper length and 8-36 thread with a fillister head
2) Find any long 8-36 screw and turn down the head to fit the hole
3) Re-tap the threads for 8-32 which opens a whole world of screws.

The problem with option 3 is that all of my 8-32 taps (I have over 50) are about a 1/4 to a 1/2 inch too short. *Have any of you successfully lengthened an existing tap? *I have mig, tig & oxy but am worried about axial alignment on the tap extension. *

What are the probable result of re-tapping an 8-36 to an 8-32 in bronze? *Will I end up with a crappy loose thread fit?

BTW, tried McMaster-Carr and Fastenall. *At McMaster I cannot find 8-36. *At Fastenall, I do find 8-36 but maximum length is 1-1/4 inches. *I would need to buy quantity 100 but at least I would get to practice my screw-lengthening skills which should be easier than tap-lengthening.

All advice appreciated.

Ivan Vegvary

McMaster Carr lists a carbon steel 8-36 die for $11.80http://www.mcmaster..com/#dies/=djwfb3- Hide quoted text -

- Show quoted text -

Which was what I was going to suggest, make one. This is what lathes
are for. Chances are you only need a short length of thread at the
end, the rest just needs to be clearance sized for the hole. 8-36 is
a standard thread, just not used a whole lot. Only other place I've
seen that thread is on GI M16 cleaning rods.

Stan

On Aug 10, 11:16*am, wrote:
On Aug 9, 10:01*pm, "Denis G." wrote:





On Aug 1, 11:46*pm, Ivan Vegvary wrote:

Installing an old mortise lockset into a front door. *Lockset was purchased (quite pricey with door knobs, cover plates etc.) from a restoration hardware place. *They reconditioned all the parts and patinated (sp?) them all to look similar.

Problem: The threaded lock cylinder needs to be fixed from rotation with a radially applied screw that is over 2-1/4 inches long. *The existing threads in the bronze casing is 8-32. *I have three choices:
1) Find a screw of the proper length and 8-36 thread with a fillister head
2) Find any long 8-36 screw and turn down the head to fit the hole
3) Re-tap the threads for 8-32 which opens a whole world of screws.

The problem with option 3 is that all of my 8-32 taps (I have over 50) are about a 1/4 to a 1/2 inch too short. *Have any of you successfully lengthened an existing tap? *I have mig, tig & oxy but am worried about axial alignment on the tap extension. *

What are the probable result of re-tapping an 8-36 to an 8-32 in bronze? *Will I end up with a crappy loose thread fit?

BTW, tried McMaster-Carr and Fastenall. *At McMaster I cannot find 8-36. *At Fastenall, I do find 8-36 but maximum length is 1-1/4 inches. *I would need to buy quantity 100 but at least I would get to practice my screw-lengthening skills which should be easier than tap-lengthening.

All advice appreciated.

Ivan Vegvary

McMaster Carr lists a carbon steel 8-36 die for $11.80http://www.mcmaster.com/#dies/=djwfb3-Hide quoted text -

- Show quoted text -

Which was what I was going to suggest, make one. *This is what lathes
are for. *Chances are you only need a short length of thread at the
end, the rest just needs to be clearance sized for the hole. *8-36 is
a standard thread, just not used a whole lot. *Only other place I've
seen that thread is on GI M16 cleaning rods.

Stan- Hide quoted text -

- Show quoted text -

I agree. Something like this is a good excuse to practice single
point threading. I wasn't sure what equipment the OP had or the
required length of the threaded part. Ergo, the die option seemed
like a good choice.

On Wed, 10 Aug 2011 09:16:37 -0700 (PDT), wrote:

On Aug 9, 10:01*pm, "Denis G." wrote:
On Aug 1, 11:46*pm, Ivan Vegvary wrote:





Installing an old mortise lockset into a front door. *Lockset was purchased (quite pricey with door knobs, cover plates etc.) from a restoration hardware place. *They reconditioned all the parts and patinated (sp?) them all to look similar.

Problem: The threaded lock cylinder needs to be fixed from rotation with a radially applied screw that is over 2-1/4 inches long. *The existing threads in the bronze casing is 8-32. *I have three choices:
1) Find a screw of the proper length and 8-36 thread with a fillister head
2) Find any long 8-36 screw and turn down the head to fit the hole
3) Re-tap the threads for 8-32 which opens a whole world of screws.

The problem with option 3 is that all of my 8-32 taps (I have over 50) are about a 1/4 to a 1/2 inch too short. *Have any of you successfully lengthened an existing tap? *I have mig, tig & oxy but am worried about axial alignment on the tap extension. *

What are the probable result of re-tapping an 8-36 to an 8-32 in bronze? *Will I end up with a crappy loose thread fit?

BTW, tried McMaster-Carr and Fastenall. *At McMaster I cannot find 8-36. *At Fastenall, I do find 8-36 but maximum length is 1-1/4 inches. *I would need to buy quantity 100 but at least I would get to practice my screw-lengthening skills which should be easier than tap-lengthening.

All advice appreciated.

Ivan Vegvary

McMaster Carr lists a carbon steel 8-36 die for $11.80http://www.mcmaster.com/#dies/=djwfb3- Hide quoted text -

- Show quoted text -

Which was what I was going to suggest, make one. This is what lathes
are for. Chances are you only need a short length of thread at the
end, the rest just needs to be clearance sized for the hole. 8-36 is
a standard thread, just not used a whole lot. Only other place I've
seen that thread is on GI M16 cleaning rods.

Stan

For a thread that long..Id use the die instead of trying to cut the
thread.

Deflection would be a killer


Gunner

--
"The danger to America is not Barack Obama but a citizenry
capable of entrusting a man like him with the Presidency.
It will be far easier to limit and undo the follies of an
Obama presidency than to restore the necessary common sense
and good judgment to a depraved electorate willing to have
such a man for their? president.. Blaming the prince of the
fools should not blind anyone to the vast confederacy of
fools that made him their prince".