What is the difference between DIN 915 and DIN 916 set screws?

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The primary difference between DIN 915 and DIN 916 set screws lies in their design and application. The DIN 915 set screw features a dog point, which is intended to fit into a prepared hole or slot on a shaft. In contrast, the DIN 916 set screw has a cup point that creates a circular dent to secure the screw to the shaft. This distinction affects their usage in various mechanical applications. Understanding these differences is crucial for selecting the appropriate set screw for specific tasks.
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What is the difference between "Hexagon socket set screw with dog point DIN 915" and "Hexagon socket set screws with cup point DIN 916" about usage field?

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Welcome to PF.
The dog point DIN 915 is designed to enter a prepared hole or slot in the shaft.
The cup point DIN 916 is designed to cut a circular dent and so lock to the shaft.
 
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I got it now exactly. Thank you so much for your attention.
 
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