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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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Is screw too soft ?
I got some 1/2" OD 1/4" ID steel light duty reducer bushings from
McMaster-Carr to use as adapter from a motor shaft to a lawn mower wheel for my new robotics project. I drilled a small hole perpendicular into it for a "set screw" -- but am using some 3/4" long "regular" screws from Home Depot since I want it go through the lawn mower wheel shaft, too. When I tighten it down all it takes is a small amount of extra force to strip the screw. I am thinking the hole I drilled before I tapped it is too big, and/or the screw is too soft. ( I'll try another hole tomorrow ) What would I need to ask for in a screw to make sure it is hard enough to keep it's threads ? The following URL shows a photo with inset of the bushing and screw for reference: http://www.waycoolgear.com/ebay/wheel.jpg |
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