Drill/tap and use a countersunk fastener. I'm not sure what you mean by "the helical $$$ problem" Are you talking about the cost of a tap?
Drill/tap and use a countersunk fastener. I'm not sure what you mean by "the helical $$$ problem" Are you talking about the cost of a tap?
If that drive screw would have worked then a simple button head machine screw would. Drill/tap the aluminum, steel fastener, dont over think this.
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