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Self-locking screws
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Thread rolling die with cylindrical slug forming and removal surface
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Thread rolling die with stabilizing portion
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Thread rolling dies
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Means for deburring screw heads
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Thread rolling die with twisted slug forming and removal surface
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Rolled thread die with traction notches
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Device for rolling teeth
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Resiliently mounted form rolling device
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Thread rolling device
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Two roll, cylindrical die machine for thread rolling
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