10-27-2021, 12:52 PM
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Administrator
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Join Date: Jul 2004
Location: Wilton, CA.
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Quote:
The two tool-steel rollers press into the fillet under the head, compressing the material giving it greater fatigue resistance. The final mechanical process is rolling the threads. ARP uses two basic types of thread rollers. ... The other type uses three thread dies to roll the thread.
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https://www.hagerty.com/media/mainte...olts-are-made/
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