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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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looking for some 2.5mm shoulder screws
I'm not sure if this is the best forum, but I couldn't find anything
better suited. I'm looking for some metric 2.5mm shoulder screws, and I've been calling around and Googling for days unable to find them. It's for an RC car, and the only ones I can find at hobby shops have a slightly too long shoulder. I need some with 4mm shoulders, and all I can find are 5mm shoulders. Does anyone here know where I might be able to find them? I also thought about buying a 2.5mm die and just re-threading about a millimeter of the shoulder, reducing its length. Does this sound reasonable? I have never used a die before. Would it be feasable to put the small screw in a vise or pair of locking plyers and use the die, or would that just deform the head of the screw from tension? Thanks, --Farrell F. |
#2
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looking for some 2.5mm shoulder screws
wrote in message oups.com... I also thought about buying a 2.5mm die and just re-threading about a millimeter of the shoulder, reducing its length. Does this sound reasonable? Shoulder screws used in die making are hardened. I'd assume the same is true for the ones you're using. This would make using a die nearly impossible. You could anneal your screws, but you'll change the their properties and capabilities. Shoulder screws are typically specified using the shoulder diameter. If you have been asking for 2.5mm shoulder screws, you may have been asking for the wrong thing. I'd assume the shoulder on a shoulder screw with a M2.5 thread would be 3mm - that's what you should be asking for. Can you use a washer under the shoulder screw's socket head to make up the 1mm? You'll probably end up taking a financial bath to get your hands on the screws you're specifying so I'd recommend using the ones to which you have easy access. Perhaps redesign the part if possible? Counterbore the component into which the shoulder screw is threaded? HTH. Regards, Robin |
#3
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looking for some 2.5mm shoulder screws
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