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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Need 8-36 screw 2-1/2" long
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 |
#2
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Need 8-36 screw 2-1/2" long
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". |
#3
Posted to rec.crafts.metalworking
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Need 8-36 screw 2-1/2" long
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 |
#4
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Need 8-36 screw 2-1/2" long
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 |
#5
Posted to rec.crafts.metalworking
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Need 8-36 screw 2-1/2" long
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 |
#6
Posted to rec.crafts.metalworking
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Need 8-36 screw 2-1/2" long
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 |
#7
Posted to rec.crafts.metalworking
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Need 8-36 screw 2-1/2" long
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. |
#8
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Need 8-36 screw 2-1/2" long
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